# Find area of quadrant of circle whose circumference is 22cm

2
by aabc123

2016-03-16T22:56:22+05:30
First use the formula of CIRCUMFERENCE of circle. then use the formula of quadrant i.e 1/4×area of circle. u will get ans 77/8 radius u will get 7/2
plz inform me that i was rightor not n u got the ans or not
ohk...
Well 77/8 = 9.625 so both of us answers are correct
ya both the answers are correct
2016-03-16T23:05:20+05:30

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Formulas used =
1. Circumference = 2 pie r
2. Area of Quadrant = 1/4 Pie r
²

Circumference = 2 Pie r

22 =  2 * 22/7 r
r = 22 * 7 / 22 * 2
r = 7/2 or 3.5 cm

Area Of Quadrant = 1/4 Pie r²
= (1/4) * (22/7 ) * 3.5 * 3.5
= 1 * 22 * 35 * 35  /  4 * 7 * 10 * 10
= 1 * 11 * 35 /  4 * 10
= 9.625 cm²

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