Question

the diagonal of a square is 15 cm find its side and perimeter​

Answer 1

Step-by-step explanation:

diagonal of square=√2a

15/√2=a

15/√2*√2/√2=a

15√2/2=a

15(1.414)/2=a

21.21/2=a

10.605cm=a

perimeter=4a

=4*21.21/2

=2*21.21

=42.42cm