Question

A sector of 100* cut off a circle contains area 70.65 cm square. find the radius of the circle .​

Answer 1

Answer:

RADIUS=9cm

Step-by-step explanation:

Area of sector= °/360° ×πrr

70.65=100/360×22/7×r×r

(70.65×36×7)/10×22=r×r

r×r=80.92

approximately 81

r×r=81

therefore r=9cm.

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