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A triangle has base 20 cm and height 12 cm. A rectangle of width 8 cm has equal area. What is its length?

A12 cm
B7.5 cm
C30 cm
D15 cm
Answer & Solution
Correct answer: D. 15 cm
The triangle's area is 120 cm2, so the rectangle's length is 120 / 8 = 15 cm.
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