Posted by Micha on Monday, October 1, 2007 at 12:34pm.
A homeowner wishes to insulate her attic with fiberglass insulation to
conserve energy. The insulation comes in 40cm wide rolls that are cut to fit between
the rafters in the attic. If the roof is 6 m from peak to eave and the attic space
is 2 m high at the peak, how long does each of the pieces of insulation need to be?
Round to the nearest tenth.

Algebra  Micha, Monday, October 1, 2007 at 12:34pm
I am sorry, How would I set this problem up?

Algebra  Ms. Sue, Monday, October 1, 2007 at 1:15pm
First, you have a rightangle triangle; its height is 2 m and its hypotenuse is 6 m. To find the base, use the Pythagorean theorem: a^2 + b^2 = c^2. This gives you half the length of a piece of insulation. Double that number to find the total length of each piece.
If you post your answer, we'll be glad to check it.

Algebra  Ms. Sue, Monday, October 1, 2007 at 2:44pm
Right! You've got it! :)

Algebra  Micha, Tuesday, October 2, 2007 at 12:33am
Thanks! :)
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