Question

Parikshit makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such cuboids will be need to form a cube?

Answer 1

$\huge \star \: \tt \purple{Answer}$

• L.C.M of 5 and 2 gives the dimension of the cube to be formed .
• L.C.M of 5 and 2 is 10

$\sf{Volume \: of \: cuboid = 5 \times 5 \times 2 = 50 {cm}^{3} }$

$\tt{Volume \: of \: bigger \: cube= {10}^{3} = 1000 {cm}^{3}}$

Number of cuboids required to make bigger cube=$\sf{ \frac{(Volume \: of cube) }{(Volume \: of \: cuboid)} = \frac{1000}{5} = 20}$