22
4. Find the area of the following circles. Take =
7
a. Radius = 21 cm b. Diameter = 35 cm
c. Circumference = 484 cm
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Answer:
a)AREA OF circle =22/7×21×21
= 66×21
= 1386
b) area of circle =22/7×35/2×35/2
=962.5
c)circumference = 2×22/7×r
484= 44/7×r
r=77
area of circle =22/7×77×77
=18634
Step-by-step explanation:
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