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The parallel sides of a trapezium are 12 cm and 20 cm, and the distance between them is 9 cm. Its area (in $cm^{2}$ ) is:

Competition practiceAreas & Volumes

A144
B288
C96
D180

Step-by-Step Solution

Area = ½ × (sum of parallel sides) × height = ½ ×

(12 + 20) \times 9

= ½ ×

32 \times 9 = 144 cm^{2}

.

Answer: A) 144

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