Question

If the radius of a coin is 20 cm,find its surface areas.

Answer 1

Answer:

• If r = 20 cm then the area of each side is 400 pi sq cm. Since a coin has 2 sides, the total surface area is 800 pi sq cm.

Explanation:

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Answer 2

Answer:

1,257.14286

Explanation:

r=20

surface area of coin =πr^2

22/7x20x20=

1,257.14286