1.

The circumference of a circle is 22 cm. Find the area of its quadrant.

Answer»

Circumference of a circle = 22 cm

That is, 2πr = 22

2 x 22/7 x r = 22

r = 7/2 cm

Area of quadrant of circle = 1/4 πr2 = 1/4 x 22/7 x 7/2 x 7/2 = 77/8

Area of quadrant of circle is 77/8 cm2



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