Mensuration Practice Test 6

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Question : 17 of 40

Marks: +1, -0

What would be the circumference of a circle whose area is 745.36 sq. cms?

94.4 cms
88.9 cms
96.8 cms
87.4 cms

Solution:

Area of the circle = 745.36

cm^2

Area of the circle =

πr^2

= 745.36

r^2

=

745.36 ×7/{22}

r^2

= 237.16
r = 15.4 cm
Circumference of circle = 2πr
=

2×{22}7

× 15.4
=

{677.6}/7

= 96.8 cm

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