3 items are filed under this topic.
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A railway bridge over a road is in the shape of a parabola |
2011-11-23 |
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From Brennen:
A railway bridge over a road is in the shape of a parabola,
and the bridge is 3 m high in the middle and 6 m wide at its base.
A truck that is 2m wide is approaching the bridge.
What is the maximum height that the truck can have and
still pass under the bridge? Explain.
Thank you!!
Answered by Penny Nom. |
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A railway cut |
2009-01-30 |
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From Jean:
A railway cut 200ft. long and 30ft. wide at the bottom is made with sloping sides, which are 80ft. and 60ft. in length. The 80-ft. side is inclined 45 degrees and the other side is 35 degrees to the horizontal. Find the cost of removing the earth at $2 per load, if the trucks have capacity of 4cu. yd.
Answered by Penny Nom. |
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Chord, radius, arc length and central angle |
2008-04-15 |
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From Cindy:
There is a railroad curve with a chord length of 2000 ft. and a central angle of 35 degrees. What is the radius and arc length of the circular arc?
Answered by Stephen La Rocque. |
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