Question

David is building a ramp.The material he will use to build the ramp costs$2.20 per squarebfoot.What will the. the total cost of building the ramp be?

Answer 1

Given data:

The cost of the material per square-foot is c=$2.20.

The expression for area of the given figure is,

`\begin{gathered} A=(21.7\text{ ft)(12 ft)+(}12\text{ ft)(8.5 ft)+}(20\text{ ft)(12 ft)+2(}(1)/(2))(20\text{ ft)(8.5 ft)} \\ =260.4ft^2+102ft^2+240ft^2+170ft^2 \\ =772.4ft^2 \end{gathered}`

The total cost is,

`\begin{gathered} C=A* c \\ =(772.4)(2.20) \\ =1699.28 \end{gathered}`

Thus, the total cost is $1699.28.