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

`(150)/(6)=a^2`
`25=a^2`

Take the square root of both-side

`5=a`

The length of each side is 5 in