Posted by **amy** on Thursday, February 16, 2012 at 5:50pm.

The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper; which costs 1.5 cents per square centimetre. How much money will Saskia spend to cover the box with paper?(assume there is no waste)

height is 40 cm .

- math .please help its worth alot of my grade :s -
**Ms. Sue**, Thursday, February 16, 2012 at 6:03pm
How far have you gotten in trying to solve this problem?

- math .please help its worth alot of my grade :s -
**amy**, Thursday, February 16, 2012 at 6:31pm
i honoustly havent gotten anything done because i dont understand this at all Ms.Sue

- math .please help its worth alot of my grade :s -
**Steve**, Thursday, February 16, 2012 at 6:35pm
Let the width be x

Then the length is 2x

so, 2(x+2x) = 60

6x = 60

x = 10

so, the box is 10x20

The area of the top is 10*20 = 200, as is the bottom.

There are two sides 10x40 = 2*400 = 800

and 2*20*40 = 1600

top and bottom cost 400*.05 = $20

faces cost .015*2400 = $36

Total cost: $56

- math .please help its worth alot of my grade :s -
**amy**, Thursday, February 16, 2012 at 6:36pm
thank you so much steve

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