126k views
5 votes
a sheet of metal that is 30cm wide and 6m long is used to make a rectangular eavestrough by bending the sheet along the dotted lines. what values of x maximizes the capacity of the eavestrough

1 Answer

5 votes
the volume of the rectangular eavestrough would be:

V = ( x ) ( 30 - 2x ) ( 600 )
V = ( 30x - 2x^2 ) ( 600 )
V = 18000x - 1200x^2
to maximize the capacity of the rectangular eavestrough, get the first derivative and equate it to zero

dV / dx =18000 - 2400x
equate to zero
18000 - 2400x = 0
2400x = 18000
x = 7.5 cm is the value of x that would maximize its capacity

User Brijesh Thakur
by
7.4k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories