Question

find the area of a square whose perimeter is 84 CM

Answer 1

Perimeter of square= 4×side
84=4×a
84/4=a
21=a

so the side is 21 cm

area of square = (a) square
i.e. = 21×21= 441 cm squ

i hope it helps u buddy ✌✌

Answer 2

Hey mate:
`•`•`•`•`•`•`•`•

Here is yr answer ____________________________

Given,

Perimeter of square=84cm

4s=84 (Perimeter of square=4s)

s=84/4

s=21


Now,

Area of square=s^2

=21^2

=441 sq. cm.


Therefore, area of square=441 sq. cm.



Hope it hlpzzz...