Question

Rita is making a large poster in the shape of a trapezoid for an art project the shorter base is 3 ft and longer base is 4 feet and the height is 1 foot. what is the area of the poster?

Answer 1

3.5 square feet.

Step-by-step explanation:

Length of the longer base, a = 4 ft

Length of the shorter base, b = 3 ft

Height of the trapezoid, h = 1 foot

`\text{Area of a trapezium}=(1)/(2)(a+b)h`

Substitute the given values:

`\begin{gathered} A=(1)/(2)(4+3)1 \\ =(1)/(2)*7 \\ =3.5ft^2 \end{gathered}`

The area of the poster is 3.5 square feet.