alleryStart learning →A triangle has perimeter 30 cm and an incircle of radius 4 cm. Its area is
A45 cm²
B60 cm²
C120 cm²
D75 cm²
Answer & Solution
Correct answer: B. 60 cm²
Area equals inradius times semiperimeter, 4 x 15 = 60 square centimetres.
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