Question

Find the area of the trapezoid by decomposing it into other shapes.

Answer 1

The answer is 25.5 cm2

area of rectangle = LW = (7)(3) = 21

area of triangle on left side = 1

2

bh = 1

2

(8 − 7)(3) = 1

2

(1)(3) = 1.5

area of triangle on right side = 1

2

bh = 1

2

(2)(3) = 3

Therefore, trapezoid area = 21 + 1.5 + 3 = 25.5 cm2

Answer 2

The answer is A) 25.5 cm2.