Question

Find the length of the diagonal of a rectangle whose sides are 15 cm and 8 cm

Answer 1

Hey

Here is your answer,

(Diagonal)^2 = (side)^2 + (side)^2
Diagonal^2 = (15)^2 + (8)^2
Diagonal = √ 225 + 64
Diagonal = √289
Diagonal = √17x17
Diagonal = 17 cm

Hope it helps you!

Answer 2

we will apply Pitagora, where the diagonal is the hypotenuse

diagonal^2 = 15^2+8^2

diag^2 = 225+64

diag ^2=289

diag = \sqrt{289} \\ diag=17