Question

12. If the length of the diagonal of a square is 20 cm, then its perimeter is
a)
$10 \sqrt{2cm}$
b) 40cm
$40 \sqrt{2cm}$
d)200cm​

Answer 1

Step-by-step explanation:

Diagonal of a square = side

2

= Side = 2

diagonal = 2

20

cm= 2

20 × 2

=2cm

= 2

20 × 2

cm=10

2cm

∴ Perimeter of square =4×side

=4×10

2 = 40

2 cm.

Answer 2

Answer:

answer will be 56.57 cm