(Take it =22/7
1. Find the area and perimeter of a circle when its
(i) radius=3.5 cm (ii) diameter = 14 cm.
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Answer:
1.(i) 38.5 sq. cm
(ii) 154 sq. cm
2.(i) 962.5 sq. m
Step-by-step explanation:
1. (i) area = 22/7 × 3.5 × 3.5
= 38.5 sq. cm
(ii) d = 14 cm
r = d/2 = 14/2 = 7cm
area = 22/7× 7×7
= 154 sq. cm
2.(i) perimeter of circle = 110 cm
2×22/7× r = 110
r = 110×7/22×1/2
r = 35/2 = 17. 5 m
area = 22/7 ×17.5 ×17.5
= 962.5 sq. m
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