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What is the volume of a square pyramid of base edge 10 centimetres and slant height 15 centimetres? |
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Answer» a = 10, l = 15 Volume of pyramid = \(\frac{1}{3}a^2h\) = \(\frac{1}{3}\times10^2\times10\sqrt{2}\) = \(\frac{1000\sqrt{2}}{3}\) cm3 \(h=\sqrt{l^2-(a/2)^2}\) = \(\sqrt{15^2-5^2}\) = \(\sqrt{225-25}\) = \(\sqrt{200}\) = \(10\sqrt{2}\) |
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