Question

Find the lateral surface area of cube ,if its diagonal is root 15 cm.​

Answer 1

Step-by-step explanation

Given,

The length of the diagonal of a cube=√15

Find :To find the lateral surface area of the cube

solution:

Let a be the side of the cube,then the length of the diagonal is defined as √3a

Hence

√3a=√15

a=√15/√3

The lateral surface area of cube is 4a²substitute the value of as follows;

=4a²

=4=(√15/3)²

=4x15/3

=20 cm²

hope it's help helpful,