Page 251 - ABCTE Study Guide_Neat

2
A 4 cm

2
B 8 cm

2
C 9 cm

2
D 14 cm

Answer

Choice B is correct. The area of a parallelogram is , where b is the base and h is the height. The
base of this parallelogram is 4 cm long. Because the height must be perpendicular to the base, the height
is 2 cm. So the area is

If you answered A, you may have used the formula for the area of a triangle rather than the area of a
parallelogram. If you answered D, you may have been finding the perimeter rather than the area.

Trapezoids

The area of a trapezoid is given by the formula , where h is the height and b 1 and b 2 are
the lengths of the parallel bases.

Question

What is the area of the trapezoid below? Round your answer to the nearest tenth of a square centimeter.