Question

Find the length of the diagonal of a rectangle whose sides are to 10 cm and 8 cm.

Answer 1

The length of the diagonal of a rectangle whose sides are 'l' and 'b' units $=\sqrt{l^2+b^2}$ units.

Here, $l=10cm$ and $b=8cm$

Length of diagonal $=\sqrt{{10}^2+8^2}=\sqrt{100+64}=\sqrt{164}=2\sqrt{41}$ units