Area and Perimeter Practice Test 3

Question : 8 of 40

Marks: +1, -0

What will be the area of a semi-circle whose perimeter is 36 cm?

Solution:

Here,

{22}/7 × r

+ 2r = 36
⇒

{36r}/7

= 36
∴ r = 7 cm
Hence, area of semicircle =

1/2 × {22}/7 × 7 × 7

77 cm^2

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