Question

The diagonals of a rhombus are 18 cm and 24 cm, Find its perimeter

Answer 1

Let $L=$length of side of rhombus; and $d_1,d_2$ be diagonals.

$\Rightarrow$L${}^2$=($\frac{d_1}{2}$)${}^2$+($\frac{d_2}{2}$)${}^2$

$=9^2$+${12}^2$

$=225$

$L=15cm$

Perimeter, $Peri$= $4\times L$

= $60cm$