Ask a New Question

Question

an open topped cylinder has a volume of 125 cubic inches. determine the radius of the pot that will minimize it's surface area.

What I have so far...

radius =r

keight =h

V=πr²h

125/πr²=h

SA = πr² + 2πr(h)

= πr² + 2πr(125/πr²)


SA =πr² +250/r
12 years ago

Answers

Steve
so far so good:

A = pi r^2 + 250/r
dA/dr = 2pi r - 250/r^2
so, when is dA/dr = 0?
12 years ago
Anonymous
235.62
8 years ago

Related Questions

rectangular open-topped box is made from a 9 x 16 piece of cardboard by cutting x-inch squares out o... An open-topped box is made from a rectangular piece of cardboard, with dimensions of 24 cm by 30 cm,... An open topped cylinder has a volume of 125 cubic inches. Express the surface area of the cylinder a... an open-topped box can be made from a rectangular sheet of aluminum, with dimensions 40 cm by 25 cm,... An open-topped rectangular box is to be constructed from a 24 inch by 36 inch piece of cardboard by... An open-topped box is constructed from a piece of cardboard with a length 2 cm longer than its widt... We need to make an open topped box with a square base and fixed volume of 8 cubic feet. The materia... An open topped box is constructed from a 20 inch by 15 inch piece of cardboard by cutting equally si... the volume of an open topped box with a square base is 245 cubic centimeters. find the height in cen... An open-topped box can be created by cutting congruent squares from each of the four corners of a pi...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use