Question

in Exercises 1-10, find the surface area of each solid. All quadrilaterals are rectangles,and all given measurements are in centimeters. Round your answers to the nearest 0.1cm2 Number 3

Answer 1

To determine the surface area we need to notice each face of the figure, here we have:

Two triangles with base 6 and height 8.

One rectangle of length 8 and width 7.

One rectangle of length 7 and width 7.

One rectangle of length 10 and width 7.

Now we need to find the area of ech of them and add them; then we have:

`\begin{gathered} SA=2((1)/(2)\cdot6\cdot8)+8\cdot7+7\cdot7+10\cdot7 \\ SA=48+56+49+70 \\ SA=223 \end{gathered}`

Therefore, the surface area is 223 square cm