juanamaC7heyd7awnte juanamaC7heyd7awnte
  • 11-12-2016
  • Mathematics
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If the volume of a cylindrical block is equal to 800cm^3 prove that the total surface area is equal to 2(pi)x^2 + (1600)/x, where x cm is the radius of the base. hence obtain the value x which makes the surface area a minimum

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Marykoss
Marykoss Marykoss
  • 11-12-2016
The area is a circle plus a cylinder, which can be thought of as a rectangle which has been rolled up.
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