Question

Find the area of square whose perimeter is 84 CM

Answer 1

perimeter of Square is 84 cm
perimeter = 4× side
84 cm= 4 × side
side = 84/4
side = 21 cm
so,
the area of Square= side × side
= 21 cm × 21 cm
=441cm^ 2

Answer 2

Answer:

Area of the square (A) = 441 cm²

Explanation:

Let side of a square = a cm

i) Perimeter of the square (P)

= 84cm /* given */

=> 4a = 84 cm

/* Divide each term by 4 , we get

=> a = 21 cm ----(1)

ii ) Area of the square (A) = a²

= (21 cm )²

= 441 cm²

Therefore,

Area of the square (A) = 441cm²

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