SOLUTION: 3a homeowner wishes to insulate her attic with fiberglass insulatio to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafers in the atti

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Question 79431: 3a homeowner wishes to insulate her attic with fiberglass insulatio to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafers in the attic. If the roof is 7 m from peak to eave and teh attic space is 3 m high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
THIS IS A RIGHT TRIANGLE PROBLEM WITH THE HYPOTENUSE=7 & 1 SIDE=3.
THUS WE HAVE THE FORMULA
A^2+3^2=21^2
A^2+9=441
A^2=441-9
A^2=432
A=20.8 CM. ANSWER FOR THE LENGTH OF EACH PIECE OF INSULATION.