Question

Find the surface area of an open box with length of 12 inches, width of 7 inches, and height of 4.5 inches

Answer 1

339 inches ²

Explanation:

First, the formula of a rectangular prism is...

2(wh+lw+lh)

*witch means 2(with x height + length x with + length x height)*

So, the equation would be...

2×(12×7 + 12×4.5 + 7×4.5)

Which answers to 339.