Mensuration Practice Test 4

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Question : 6 of 40

Marks: +1, -0

The area of a circle is 3,850 sq. m. What will be its circumference?

233 m
226 m
230 m
220 m
249 m

Solution:

Area of the circle = 3,850

m^2

Radius = r

πr^2

= 3,850

r^2

=

{3850×7}/{22}

r^2

= 1225
r = 35 m
Circumference of the circle = 2πr
=

2×{22}/7 × 35

= 220 meters

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