Mathematics
Find the circumference and area of a circle of radius 15 cm.
Mensuration
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Answer
Circumference of circle = 2πr = 2 × π × 15
= 2 × 3.14 × 15
= 3.14 × 30
= 94.2 cm.
Area of circle = πr2
= 3.14 × (15)2
= 3.14 × 225
= 706.5 cm2.
Hence, circumference = 94.2 cm and area = 706.5 cm2.
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