Question

Find the area and circumference of a circle when radius=7cm.

Answer 1

Answer:

A=πr2=π·72≈153.93804cm²

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Answer 2

Answer:

Answer

Given the radius of the circle is 7 cm.

Then its circumference =2πr

Circumference =2×π×7

Circumference =2×22=44 cm.

Correct option is

B

49π

Area of a circle =πr

2

, where r is the radius of the circle

Since r=7

So, area of the given circle =π×7×7=49π