alleryA right triangle has legs of 9 cm and 12 cm. What is its perimeter?
A36 cm
B21 cm
C30 cm
D54 cm
Answer & Solution
Correct answer: A. 36 cm
The hypotenuse is the square root of 81 + 144, which is 15, so the perimeter is 9 + 12 + 15 = 36 cm.
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