15. Geometry. A homeowner wishes to insulate her attic with fiberglass insulation to
conserve energy. The insulation comes in 40-cm 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.
16. Geometry. For the home described in exercise 15, if the roof is 7 m from peak to
eave and the 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.
2007-08-15 13:47:36 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
15.
A rafter is a structural member, a type of beam, which supports the ROOF of a building.
The insulation goes between the RAFTERS. 6 meters!
If you were to put the insulation between the ceiling studs, which make up the FLOOR of the attic, you would use the Pythagorean theorem. As the questions are posed, the attic heights are irrelevant, as is the width of the insulation roll.
16.
7 meters. The insulation is going between the RAFTERS again, not the floor joists. Somebody was trying to trick you.
2007-08-15 14:08:08 · answer #1 · answered by David K 3 · 0⤊ 0⤋
calculate the the entire area that has to be covered with insulation
maybe use some paper to model it if you don't understand
2007-08-15 13:52:05 · answer #2 · answered by Anonymous · 0⤊ 1⤋
1. sqrt(80) or 9.0 m
2007-08-15 13:58:30 · answer #3 · answered by cattbarf 7 · 0⤊ 1⤋