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A solid cubical box of fine wood costs Rs. 256 at the rate of Rs. 500/m3. Find its volume and length of each side. |
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Answer» The cost of Rs. 500 is for 1m3 . The cost of Rs. 256 is for \(\frac{256}{500} = \frac{128}{250}\) = \(\frac{64}{125}m^3\) ∴ Volume of the wood = \(\frac{64}{125}m^3\) = 0.512 m3 Volume = 0.512m l3 = 0.512 l = \(3\sqrt{0.512}\) l = 0.8 m2 = 0.8 × 100 Length of the side = 80 cm, l = 80 cm |
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