Well, to save everybody's time, here's solution:Psychguy98 said:Paul is constructing a concrete ramp adjacent to an existing step. The height of the ramp is 10 inches, the length is 35 inches, and the width is 20 inches. The pre-mix concrete comes in forty pound bags, and 3600 is needed for one cubic yard of volume. Based on the given information, approximately how many pounds of pre-mix are needed to fill the ramp? Thank you.
Very cute...so?Psychguy98 said:a. 608
b. 875
c. 1,167
d. 270
e. 280
Denis said:Well, to save everybody's time, here's solution:Psychguy98 said:Paul is constructing a concrete ramp adjacent to an existing step. The height of the ramp is 10 inches, the length is 35 inches, and the width is 20 inches. The pre-mix concrete comes in forty pound bags, and 3600 is needed for one cubic yard of volume. Based on the given information, approximately how many pounds of pre-mix are needed to fill the ramp? Thank you.
1 cu.in. = 1 / (36*36*36) = .00002143347... cu.yd
10*20*35 = 7000 cu.in. = 7000 * .00002143347 = .150034293... cu.yd.
...
Denis said:Very cute...so?Psychguy98 said:a. 608
b. 875
c. 1,167
d. 270
e. 280
Notice d. has 270, half of what I showed assuming 3600 pounds.
So (if that's the answer) the weight is 1800 instead of 3600;
that then means 45 40-pound bags: 45 * 40 = 1800.
That's a far cry from 3600 40-pound bags...you sure you worded problem correctly?
NO! That's height from 10" to 0: easier to walk "down" !!Subhotosh Khan said:Another thought could be that the ramp is sloped as tk was indicating - height from 0 to 10" (linearly).
Mrspi said:I think in all of this discussion about conversions, the fact that this ramp is a prism with a triangular base has been overlooked.
Johnnyq said:Pythagorean theorem is tricky
How is that?