Question

Find the perimeter of square whose area is 64cm

Answer 1

we know that area of square = a²
[ where 'a' is the length of one side]
a²=64
a=8
perimeter of square= 4a
[ where 'a' is the length of one side]
4a
4×8
32
hence the perimeter of square is 32 cm.

Answer 2

answer is:

area of square

${ = side}^{2}$

$= 64cm {}^{2} = side { }^{2}$

$= \sqrt{ 64cm { }^{2} } = side$

so,side=8cm

perimeter of square=4×side

=4×8cm

=32cm.

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