Homework Help: math

Posted by audrey on Wednesday, May 18, 2011 at 5:33pm.

the base of a rectangular prism is congruent to the base of a pyramid. The height of the pyramid is 3 times the height of the prism. Which figure has a greater volume? Explain.

I'm terrible with these kind of word problems. If you could explain that would be great.

math - audrey, Wednesday, May 18, 2011 at 5:39pm
can someone please help me!?!
math - Henry, Thursday, May 19, 2011 at 4:14pm
ht. of rectangle = h.

ht. of pyramid = 3h.

Vr = Ab*h = Volume of rectangle.

Vp = Ab*3h/3,
The "3s" cancel.
Therefore, Vp = Vr = Ab*h.

Based on the dimensions given,the
volume of the rectangle is equal to
the volume of the pyramid.

Ab*h = Volume of pyramid

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