Question

what is the diagonal of square of side11cm

Answer 1

Hey

Here is your answer,

(Diagonal)^2 = (11)^2 + (11)^2
Diagonal = √ 121+121
= √ 242
= 11√2 cm

Hope it helps you!

Answer 2

Hii friend,

Side of the square = 11 cm

Then,

Area of the square = (Side)² = (11)² = 121 cm

We know that,

Area of square = 1/2 × (Diagonal)²

121 = 1/2 × (Diagonal)²

(Diagonal)² = 121 × 2 = 242

Diagonal = ✓242 = 15.55 cm

Hence,

The diagonal of square = 15.55 cm