Question

find the area of a square whose perimeter is 40 cm

Answer 1

hey dude,

answer :
100 cm square

Explanation:
Perimeter = 40 cm
Side = s
Perimeter = 4 x s
40 cm = 4 x s 
s = 40/4
side = 10 cm

Area = s x s
Area = 10 cm x 10 cm
Area = 100 cm square

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Answer 2

perimeter of sq =4*side
40=4*side
side =40/4=10
area of sq =side*side
=10*10
=100meter^2