Question

the four faced of a rectangular pyrimid below are painted yellow. how many square feet will be painted

Answer 1

The number of square feet to be painted is equal to the surface area of the four face painted yellow.

Total Surface Area (TSA) =

`4((1)/(2)bh)`

By Pythagoras Theorem,

`\begin{gathered} h^2+1.5^2=5^2 \\ h^2=5^2-1.5^2 \\ h=\sqrt[]{25-2.25}\text{ =}\sqrt[]{22.75}=4.7697\text{ fe}et \end{gathered}`