The length of the diagonal of a square is 20 cm. its area is

The length of the diagonal of a square is 20cm. Its area is 400cm^(2)( b) 200cm^(2)300cm^(2)(d)100sqrt(2)cm^(2)

The length of the diagonal of a square is 20cm. Its area is (a)400 c m^2 (b) 200 c m^2 (c)300 c m^2 (d) 100sqrt(2)\ c m^2

The length of the diagonal of a square is 24 cm. Find its area .

If the length of the diagonal of a square is 20cm,then its perimeter must be

If the diagonal of a square is 7sqrt2 cm, then its area is

.Find the length of the diagonal of a square if its area is "484cm^(2)" .

Each diagonal of a square is 12 cm long. Its area is