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#401 2016-04-03 16:58:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#179 is correct. Excellent, bobbym!
M#180. Find the area of a sector of a circle with radius 6 cm, if angle of the sector is 60 degrees.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#402 2016-04-04 11:33:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#403 2016-04-04 16:12:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#180 is correct. Good work, bobbym!
M#181. The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#404 2016-04-04 16:58:59
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#405 2016-04-04 18:19:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#181 is correct. Neat work, bobbym!
M#182. A chord of a circle of 10 cm subtends a right angle at the center. Find the area of the corresponding
(i) minor segment.
(ii) major sector.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#406 2016-04-05 05:16:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
pi = 22 / 7 ?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#407 2016-04-05 16:38:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
bobbym, use pi = 3.14.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#408 2016-04-05 18:55:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#409 2016-04-05 23:30:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#182 (two parts) are correct. Excellent, bobbym!
M#183. In a circle of radius 21 cm, an arc subtends an angle of 60 degrees at the center. Find
(i) The length of the arc.
(ii) The area of the sector formed by the arc.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#410 2016-04-06 14:35:31
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#411 2016-04-06 16:51:00
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#183 (two parts) are correct. Neat work, bobbym!
M#184. A chord of a circle of radius 15 cm subtends an angle of 60 degrees at the center. Find the areas of the corresponding minor and major segments of the circle.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#412 2016-04-06 18:02:36
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#413 2016-04-06 23:54:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#184 (two parts) are correct. Brilliant, bobbym!
M#185. The radius of a circle is 14 cm and the area of the sector is 102.7 square centimeters. Find the central angle of the sector. (Approximately).
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#414 2016-04-07 03:00:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#415 2016-04-07 11:03:05
- Relentless
- Member
- Registered: 2015-12-15
- Posts: 631
Re: Mensuration
Hello!
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#416 2016-04-07 16:48:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#185 is correct. Excellent, bobbym and Relentless!
M#186. The perimeter of a sector of a circle of radius 5.7 cm is 27.2 cm. Find the area of the sector.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#417 2016-04-07 17:05:00
- Relentless
- Member
- Registered: 2015-12-15
- Posts: 631
Re: Mensuration
Hey 
There is no need to approximate pi, since it cancels
Last edited by Relentless (2016-04-07 17:07:17)
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#418 2016-04-07 18:49:16
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#419 2016-04-07 19:33:55
- ElainaVW
- Member
- Registered: 2013-04-29
- Posts: 580
Re: Mensuration
Mr. m, it looks like you have forgotten the definition of a sector.
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#420 2016-04-07 19:35:20
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi EVW;
You are correct, I forgot the two radii are part of the perimeter but it is too late to change it now.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#421 2016-04-07 23:49:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#186 (45.03 square centimeters) is correct. Excellent, Relentless and ElainaVW!
M#187. A chord of circle of radius 7 cm subtends a right angle at the center. Find the area of the major sector of the circle.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#422 2016-04-08 02:05:21
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#423 2016-04-08 17:09:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#187 is correct. Excellent, bobbym!
M#188. Find the length of the arc that subtends an angle of 72 degrees at the center of a circle of radius 5 cm.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#424 2016-04-08 18:44:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Mensuration
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#425 2016-04-09 17:10:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,428
Re: Mensuration
Hi;
The solution M#188 is correct. Neat work, bobbym!
M#189. The perimeter of a circle of radius 5.2 cm, is 16.4 cm. Find the area of the sector.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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