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Fathima from Gems Our Own English High School, asked a question
Subject: Math , asked on 31/10/14

Find the area of a quadrant of a circle whose circumference is 22 cm. Take PIE= 22/7

Vivek Don From Delta Study, added an answer, on 6/3/13
107 helpful votes in Math

   hope it helps..

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Rittul Arya From Spring Meadows Public School, added an answer, on 6/3/13
8 helpful votes in Math

circumference of circle= 2 XpieXr

22= 2X(22/7)Xr

(22X7)/(22X2)=r

7/2=r

area of quadrant= 1/4X pie X r^2

=(1/4)X(22/7)X(7/2)^2

=77/8

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Sweety Purnima Lugun , added an answer, on 31/10/14

as u knw circumference of a circle = 2 * pie * radius, 22 = 2 * 22/7 * r , r = 7/2

area of circle = 1/4 * pie * radius * radius = 1/4 * 22/7 * 7/2 * 7/2 = 77/8 ans

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Harbir Singh From Sacred Heart Convent School, added an answer, on 6/3/13
43 helpful votes in Math

circumference = 2*pi*r

22 = 2 * 22/7 * r

r = 22 * 7/22 * 1/2

r = 7/2 cm

area of quadrant = 1/4 * pi * r * r

= 1/4 * 22/7 * 7/2 * 7/2

= 77/8 cm sq.

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Mohammed Meeran From The Central School, added an answer, on 6/3/13
28 helpful votes in Math

 2 π r =22

R= 22 *7/22 *1/2

So r= 7/2

Now area of quadrant = π ϴ /360

22/7*49/4*90/360

So area of quadrant=9.6250

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Divya Janjua From Air Force Bal Bharati School, added an answer, on 6/3/13
139 helpful votes in Math

 circumference of circle = 22 cm

therefore  2 pi r = 22

r = 22 x 7 / 2 x 22

on cancellation

r = 7 / 2 = 3.5 cm

therfore area of quadrant = pi r square / 4

                                              = 22 / 7 x 3.5 x 3.5 x 1 / 4

                                              = 38.5 / 4 cm square = 9.625 cm square

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Namrata Chhabra From Holy Child Auxilium School, added an answer, on 6/3/13

Circumference of a quadrant is 1/4 the circumference so the circumference of the circle is 4x22=88cm, Also circumference of a circle is 2(pi)R.

=>2x22/7xR=88cm

 >R=88x7/22x2

 >R=88x7/44

 >R=2x7

 >R=14cm

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