Mensurationhard · Past Paper
A hemisphere of radius 3 cm is placed on a cube of side 6 cm. What is the total surface area of the combined solid?
A216 + 9π
B216 + 18π
C216 + 27π
D216 + 6π
✓ Correct Answer: A — 216 + 9π
TSA = TSA of cube - Base area of hemisphere + CSA of hemisphere = 216 - πr² + 2πr² = 216 + πr² = 216 + 9π.
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