Question

Find the area and the perimeter of a square whose diagonal is 10 centimetre long

Answer 1

we know, 1/2×(diagonal)^2=area of the square
.. 1/2×(10)^2=area of the square
1/2×100=50m2
so,area of.the square =50m2
(side)^2=50m2
side=5×2^1/2 ;5under root2
perimeter =4×side
. =4×5under root2
=20 underroot2 cm

Answer 2

$\huge\bold{Answer}$
______ __________

⇒ Diagonal =square root of 2×side

⇒ Side =10/sq root of 2

⇒ Area of square=a^2

⇒ Area of square= (10/sq root 2)^2

⇒ Area of square = 100/2

⇒Area of square= 50