Question
The volume of a cube is increasing at the rate of . How fast is the surface area increasing when the length of an edge is 12 cm?
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Question 1
A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is 2m and volume is 8 m3 . If building of tank casts Rs. 70 per sq. metre for the base and Rs. 45 per sq. metre for sides, what is the cost of least expensive tank?Stuck on the question or explanation?
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Question Text | The volume of a cube is increasing at the rate of . How fast is the surface area increasing when the length of an edge is 12 cm? |