Mensurationhard · Past Paper
Find the area of a circle inscribed in an equilateral triangle of side 12 cm.
A12π sq. cm
B24π sq. cm
C36π sq. cm
D48π sq. cm
✓ Correct Answer: A — 12π sq. cm
In-radius r = side / (2√3) = 12 / (2√3) = 2√3. Area = πr² = π(2√3)² = 12π sq. cm.
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