Change in Scale Rectangular Prism

Both the width and the volume of a rectangular prism change by a scale factor of 4.  If the old width was 5 ft and the old volume was 250 cubic ft, what is the new width and volume?

• 20 ft. and 1,000 cubic ft.

• 1.25 ft. and 62.05 cubic ft.

• 20 cubic ft and 1,000 ft.

• 625 ft and 3,906,250,000 cubic ft

The length of a rectangular prism changes from 6 feet to 18 feet.  What is the scale factor of the change?

• 1/3

• 3

• 2

• .3

If any one dimension of a rectangular prism (length, width, or height) changes size, the _________ of the rectangular prism changes by the same scale factor.

• surface area

• other dimensions

• radius

• volume

The length of a rectangular prism is 4 inches and the volume is 220 cubic inches.  If the length changes so that the volume becomes 440 cubic inches, what is the new length?

• 8 square inches

• 8 inches

• 2 square inches

• 2 inches

The volume of a rectangular prism changes from 1,250 cubic inches to 125 cubic inches.  What is the scale factor of the change?

• 1/2

• 1/10

• 10

• 1/5

The width of a rectangular prism is 12 cm and the volume is 180 cubic cm.  Both change by a scale factor of 1/12.  What is the new width and the new volume?

• 144 cm and 2,160 cubic cm

• 1 cm and 15 cubic cm

• 2 cm and 30 cubic cm

• 1 square cm and 15 cubic cm

The height of a rectangular prism was 6 ft and the volume was 399 cubic ft.  The height changed to 3 ft.  What is the new volume?

• 798 cubic ft.

• 199.5 square ft.

• 798 square ft.

• 199.5 cubic ft.

The volume of a rectangular prism is 80 in³.  If its width is divided by 2 to make a new prism, then the new volume will be _______.

• 80 in³

• 40 in³

• 20 in³

• 10 in³

A rectangular prism is 5 meters by 8 meters by 7 meters. The side that is 7 meters long is doubled, the other sides lengths are unchanged.  How does the volume change?

• The volume is twice as large

• The volume is 7 times as large

• The volume is 8 times as large

• The volume is 14 times as large

Rectangular Prism A has a volume of 275 cubic inches. Rectangular Prism B has the same dimensions as Prism A except it is three times taller in height. What is the volume of Prism B?

• 278 cu in.

• 825 cu in.

• 92 cu in.

• 273 cu in,