Saturday

February 28, 2015

February 28, 2015

Posted by **phil** on Sunday, November 9, 2008 at 9:13am.

A box with a quare base and top has a volume of 20 meters cubed. The material for the base costs $7.00 per sq. meter, the material for the sides costs $4.00 per sq. meter, and the material for the top costs $2.00 per sq. meter. Express the cost of the materials used to build the box as a function of the width x of the base.

- math -
**drwls**, Sunday, November 9, 2008 at 9:18amIf the width of the box is x, and the volume is 29 = x^2 h, then the height h is 20/x^2.

Write a formula for the side area, the top area and the bottom area in terms of x only.

Finally, write another formula that adds up the costs of all sides.

**Answer this Question**

**Related Questions**

math - A rectangular box is to have a square base and a volume of 30 ft3. The ...

math - A rectangular box is to have a square base and a volume of 50 ft3. The ...

Math-Optimization - The material for the base of a box will cost three times as ...

Calculus - A rectangular box is to have a square base and a volume of 20 ft3. ...

calculus - A rectangular box is to have a square base and a volume of 50 ft3. ...

calculus - A rectangular box is to have a square base and a volume of 50 ft3. ...

calculus - A rectangular box is to have a square base and a volume of 50 ft3. ...

calculus - A rectangular box is to have a square base and a volume of 50 ft3. ...

Applied Calculus - A rectangular box is to have a square base and a volume of 50...

math - a woman wants to construct a box whose base length is twice the base ...