Math, asked by moksha41, 1 year ago

if circumference of a circle is 400cm.Find the perimeter of rectangle whose length is double of its breadth and breadth is twice of radius

Answers

Answered by anushkaa05

Answer:

Step-by-step explanation:

circumference = 400cm

2πr = 400cm

πr = 200 cm

r = 200* 7/22

r = 700/11 cm

breadth of rect. (b) = 2r

length of rectangle (l) = 2b = 4r

perimeter of rectangle = 2(l+b)

= 2( 4r + 2r )

=2 ( 6r )

= 12r

= 12 * 700/11

=8400/11

=763.6 cm

PLEASE MARK THIS AS BRAINLIEST ANSWER !

moksha41: it's 763.2 cm

anushkaa05: what level ?

moksha41: 8th

moksha41: Listen my answer us 763.2

moksha41: it would be correct or not

anushkaa05: if your answer is correct, then there should not be any issue

moksha41: actually i m asking that is 763.2cm is correct??

anushkaa05: if there is a point difference then I don't think its wrong

moksha41: ok thanks a lot

anushkaa05: anytime

Answered by dreamyy

We know that, circumference of circle =

$2\pi\:r$

2 x 22/7 x r = 400

r = 200 x 7 / 22

r = 1400 / 22

r = 700 / 11

Thus, radius of circle is 700/11 cm

• Perimeter of Rectangle

Perimeter = 2(l+b)

Breadth = 2r

= 2 × 700 / 11

= 1400 / 11

Length = 2 × b

= 2800 / 11

Now, perimeter = 2(2800/11 + 1400/11)

= 2(4200/11)

= 8400 / 11

= 763.63 cm

Hope this helps you!

moksha41: listen i have a doubt plz help me

dreamyy: what is your problem?

moksha41: nothing just a little bit difference in point and is 763.2

moksha41: i think it's also Correct

dreamyy: yes a minor point difference does not count

dreamyy: 763.2 is also correct

moksha41: thanks

dreamyy: it is correct upto a difference of 0.5 so yes

dreamyy: anytime

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if circumference of a circle is 400cm.Find the perimeter of rectangle whose length is double of its breadth and breadth is twice of radius​

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if circumference of a circle is 400cm.Find the perimeter of rectangle whose length is double of its breadth and breadth is twice of radius