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The height of a pyramid is doubled, but its length and width are cut in half. What is true about the volume of the new

pyramid?
O The new pyramid has a volume that is the volume of the original pyramid.
1
O The new pyramid has a volume that is the volume of the original pyramid.
O The new pyramid has the same volume as the volume of the original pyramia
O The new pyramid has a volume that is 2 times the volume of the original pyramid.

1 Answer

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The volume of a pyramid is given by the formula V = (1/3)Bh, where B is the area of the base and h is the height. If we double the height and cut the length and width in half, the new dimensions of the pyramid will be:

New height = 2h
New length = 0.5l
New width = 0.5w

The new volume of the pyramid can be calculated as follows:

New volume = (1/3)B(2h) = (2/3)Bh

The area of the new base, B, is given by:

B = (0.5l)(0.5w) = 0.25lw

Therefore, the new volume of the pyramid can be written as:

New volume = (2/3)(0.25lw)(2h) = (1/3)lwh

This is exactly half of the original volume of the pyramid, which means that the statement "The new pyramid has a volume that is 2 times the volume of the original pyramid" is false.

The correct answer is:

O The new pyramid has a volume that is the volume of the original pyramid.
User Oleh Zayats
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