Q.

The area of a square is 64cm². Find its perimeter ?

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a

none

b

8cm

c

32cm

d

24cm

answer is A.

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Detailed Solution

Let, side of square=a

So, a2=64 sq.cm

a=8cm

Perimeter=4a=4×8=32cm.

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The area of a square is 64cm². Find its perimeter ?