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Question

Find the area of a triangle whose sides are 9 cm, 12 cm, and 15 cm.

A
34cm2
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B
44cm2
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C
54cm2
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D
55cm2
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Solution

The correct option is D 54cm2
Given sides of the triangle
a=9cm
b=12cm
c=15cm
The given triangle is a right angle triangle
because a2+122=152
Area =12×9×12=54 sq cm
Area =54 sq cm.

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