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A box is in the form of a cube. Its dege is 5 m long. Find (a) the total length of the edges. (b) the cost of outside of the box, on all the surfaces, at the rate of Rs. 5 per `m^(2)`. (c ) the volume of liquid which the box can hold. |
Answer» (a) Length of edges = Number of edges of base ` xx 3 xx "length of each edge"=4xx3xx5=60 m.` To find the cost of painting the box, we need to find the total surface area. `TSA=6a^(2)=6xx5^(2)=6xx25=150 m^2)` ` :. " Cost of painting "=150xx 5=Rs. 750.` (c ) Volume `=a^(3)=5^(3)=125 m^(3)`. |
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