Find the circumference of the circle whose area is 16 times the area of the circle with diameter 7 cm.
Mensuration
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Question

Find the circumference of the circle whose area is 16 times the area of the circle with diameter 7 cm.

KnowledgeBoat · Accepted Answer

Let area of larger circle be r cm. Radius of circle with diameter 7 cm = = 3.5 cm. Given, Area of larger circle is 16 times the area of the circle with diameter 7 cm. ⇒ πr² = 16 x π x (3.5)² ⇒ r² = 196 ⇒ r = = 14 cm. Circumference = 2πr = = 88 cm. Hence, circumference of circle = 88 cm.

Mathematics

Find the circumference of the circle whose area is 16 times the area of the circle with diameter 7 cm.

Mensuration

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Mathematics

Find the circumference of the circle whose area is 16 times the area of the circle with diameter 7 cm.

Mensuration

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