Question

(2) Length of a diagonal of a square is 15v2 cm. Find its perimeter
(A) 15 cm
(B) 30 cm
(C) 45 cm
(D) 60 cm​

Answer 1

Answer:

√2 a=diagonal of square

√2 a=15 √2

a=15 √2/√2

a=15

so side of square=15 cm

perimeter of square=4×side

=4×15

=60

so,it's perimeter=D.60