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June 26th, 2011, 01:17 AM   #1
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Surface Area: How do I find the dimensions with this problem

The question states a box has a surface area of 198 cm squared

Length is 3 times the width, height is 2 times the width, wants me to find what the width is.

For some reason this one has really stumped me, I checked the back of the book and the answer is 3, but I can't figure out how to get that number. My textbook is horrible, it has so many problems where it's never taught you how to figure them out.
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June 26th, 2011, 01:32 AM   #2
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2(3ww + 3w2w + 2ww) = 2(3w + 6w + 2w) = 2(11w) = 22w = 198
w = 198/22 = 99/11 = 9
? w = ?9 = 3
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June 26th, 2011, 01:57 AM   #3
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Re: Surface Area: How do I find the dimensions with this pro

Yeah I got to the whole 198/22 = 9 before I posted this, I suppose it should have been obvious to just show the root of 9, oh well, I'm sleepy lol.
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