Question

find the area of a square whose diagonal is 5√2 CM.

Answer 1

diagonal of square=√2×side....(formula)

5√2=√2×side

5√2/√2=side

5=side

side =5cm

area of square =side^2

=5^2

25cm^2

Answer 2

$area \: of \: square = d ^{2} \div 2 = (5 \sqrt{2})^{2} \div 2 = 50 \div 2 = 25$