(5) Find perimeter of a square if its diagonal is 10√2 cm.
(A)10 cm (B) 4072 cm (C) 20 cm (D) 40 cm
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Answer:
(D) 40 cm
Step-by-step explanation:
Given:
Diagonal(D):10√2 cm
=√2a^2
10√2 =√2a^2 (Dividing by√2 on both sides)
10=a^2
√10=a
Perimeter of Square=4*a
=4*√10
=4√10 cm
=40 cm
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