Question

215. Find the circumference and area of a circles having:
(i) Diameter = 14cm (ii) Radius =3.5cm
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Answer 1

i.diameter = 14cm

∴ radius r=14/2=7 cm

circumference=2πr=2×22/7×7=44 cm

ii.Area of circle = π×r×r Area = 22/7 × 4.65 × 4.65 = 67.95 sq.cm