Question

The circumference of a circle is 22cm. Calculate the area of quadrant.​

Answer 1

Formulas used

1. Circumference = 2 pie r

2. Area of quadrant= 1/4 pie r^2

Circumference = 2 pie r

22= 2*22/7r

r= 22*7/22*2

r= 7/2 or 3.5 cm

Area of quadrant = 1/4 pie r^2

= (1/4)*(22/7)*3.5*3.5

= 1*22*3.5*3.5/4*7*10

= 1*11*3.5/4*10

= 9.625 cm^2.

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