A rectangular box of given volume is to be "a" times long as it is wide. find the dimension for which

0 ⤊

it has the least total surface area ?
(calcuus)
optimization problem
plz give me the exxact answer in detail

2006-12-10 07:09:13 · 1 answers · asked by unnamed 1 in Science & Mathematics ➔ Mathematics

sides are x, x and ax right?

so 4x^2 + 2ax is surface area
differentiate to minimise
dx = 8x +2a = 0
a = 4x, so dims are x,x,4x

2006-12-10 07:13:34 · answer #1 · answered by alia_vahed 3 · 0⤊ 0⤋