If weight of a cuboid of size $20\;cm \times 10\;cm \times 15\;cm$ is $50\;kg$ find the weight of another cuboid of same material with size $20\;cm \times 9\;cm \times 13\;cm$

Question

$\begin{array}{1 1} 44\;kg \\ 37\;kg \\ 36\;kg \\ 39\;kg \end{array} $

Answer 1

Solution :

$20 \times 10 \times 15 => 50 kg$

$20 \times 9 \times 13=> ? $

=> $x = \large\frac{20 \times 13 \times 50}{20 \times 10 \times 15}$

$x= 39\;kg$

Answer : 39 kg