Question

A section in a stained glass window is shaped like a trapezoid. The top base is 4 centimeters and the bottom base is 2.5 centimeters long. If the area of the section of glass is 3.9 square centimeters, how tall is the section?

Answer 1

The area of a trapezoid can be found with the formula
`A=\frac{b_1+b_2}2h` where b1 and b2 are the bases and h is the height. Let's plug in the values that we know and solve for h.


`3.9=\frac{4+2.5}2h`


`3.9=\frac{6.5}2h`


`3.9=3.25h`


`\boxed{h=1.2\ cm}`