Question

If the diagonals of a rhombus are 18 mm and 24 mm, then its sides is

• A. 15 mm
• B. 12 mm
• C. 18 mm
• D. 19 mm

Answer 1

The correct option is A 15 mm

Formula for sidesof a rhombus is
$side=\frac{\sqrt{p^2+q^2}}{2}$
p and q are diagonals
$side=\frac{\sqrt{{18}^2+{24}^2}}{2}$
$side=\frac{\sqrt{324+576}}{2}$
$side=\frac{\sqrt{900}}{2}=\frac{30}{2}=15㎜$