Area and Perimeter Practice Test 4

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Question : 23 of 40

Marks: +1, -0

Area of a circle is 154 sq. cm. Its circumference will be

44 cm
48 cm
54 cm
68 cm

Solution:

Area of the circle =

πr^2

⇒

πr^2

= 154 ⇒

r^2

=

{154×7}/{22}

⇒ r = 7 cm
∴ Circumference of the circle = 2πr = 2 ×

{22}/7

× 7 = 44 cm.

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