Mensurationhard · Past Paper
A square-based pyramid has a base side of 10 cm and a slant height of 13 cm. What is its total surface area?
A260 cm²
B360 cm²
C130 cm²
D460 cm²
✓ Correct Answer: B — 360 cm²
TSA = Base Area + Lateral Area = a² + 2al = 10² + 2(10)(13) = 100 + 260 = 360 cm².
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