Question

Use differentials to approximate the amount in cubic feet of paint needed to cover a cube of side length 100 feet if thickness of the paint is to be 0.01 feet.

Answer 1

i dont remember.. any formulas to remind me?

Answer 2

can you go to this link and look at question 9
http://www.math.sunysb.edu/~jwalsh/Summer_08/hmwk0625sol.pdf

Answer 3

its in pdf so i cant copy and paste but question 9 is a sample problem

Answer 4

ok

Answer 5

easy, unless im very wrong:
V = a^3
dV = 3a^2(da) = 3*100^2*(0.01) = 3*10,000*0.01 = 3*100 = 300

Answer 6

ok thanks