Question

The total surface area of a cube is 150 in2. What is the length of each side of the cube? It is_in.

Answer 1

surface area of a cube is given by the formula;

$A=6a^2$

where A is the area and a is the length

substitute A = 150 in the above and then solve for a

$150=6a^2$

Divide both-side of the equation by 6

$\frac{150}{6}=a^2$$25=a^2$

Take the square root of both-side

$5=a$

The length of each side is 5 in