Question

Find the side and perimeter of a square whose diagonal is 10 cm

Answer 1

l=8 cm, B= 6 cm & perimeter will be 2( l+B)=28cm

Answer 2

given diagonal of a square =10cm
we know that each angle of square is 90 degree
we will apply pythagoras theorem here
let the side of square be x cm
=>x^2+x^2=10^2
=>2x^2=100
=>x^2=50
=>x=root 50
=>x=5 root 2