Question

The length of the diagonal of a square ⬜ is 12 cm.Find its area and perimeter
(HINT: area = 1/2 * diagonal * diagonal)

Answer 1

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Answer 2

Since d = Under root 2 * side

12 cm / √2= side

So Area = Side × Side
=12*12/√2×√2
=144/2
=72 cm^2.

And Perimeter= 4×side
=4×12/√2
=48/√2 cm
48×√2/√2×√2 cm
48×√2/2 cm
24√2 cm.

Hope it's helpful to u.