A trapezoid has bases of 12 and 20 centimeters and a height of 9 centimeters. What is its area?
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- First find half the sum of the bases 12 and 20.
- Calculate (12 + 20) × 9 ÷ 2.
Show the answer and solution
Answer: 144
A trapezoid's area is half the sum of its bases times its height: (12 + 20) × 9 ÷ 2 = 144 square centimeters.