Christi is making a large poster in the shape of a trapezoid for an art project. The shorter base is 5 ft, the longer base is 7 ft, and the height is 2 ft. What is the area of the poster?

12ft²

Step-by-step explanation:

Christi is making a large poster in the shape of a trapezoid for an art project. The shorter base is 5 ft, the longer base is 7 ft, and the height is 2 ft. What is the area of the poster?

The area of a trapezoid is calculated as:

1/2 ( a + b) h

Where

a = Shorter base = 5ft

b = Taller base = 7ft

h = Height = 2 ft

Hence,

Area of Trapezoid =

1/2(5 + 7)2

= 1/2 × 12 × 2

= 12 ft²

Therefore, the area of the poster(Trapezoid) = 12 ft²

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