A wooden board is placed so that it leans against a loading dock to provide a ramp.
The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support.
The bottom of the support is 8 feet from the point where the ramp meets the ground.
The slope of the ramp is 2/5 (this means that for every 2 feet it goes up, it goes 5 to the side).
Find the length of the beam to the nearest hundredth of a foot. Note that the 1 ft. support is vertical, but the metal beam is not.
_____
The answer I got was 2.24 feet.
I took the point where the support meats the beam and
the point where the beam meets the ramp and used the distance formula.
By using those points, I can make a right triangle with a base
of 1 and a side of 2. Using the Pythagorean theorem, 1^2 + 2^2 = c^2, the hypotenuse
of the right triangle is sqrt(5) or 2.24 feet. So, the length of the metal beam
is 2.24 ft
This is a good first try. Please work through this one again, showing me ALL your wor
2007-10-16
09:51:16
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3 answers
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asked by
kaze950
1