Question

A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft.

Round to the nearest tenth, if necessary.

•3.8 ft^3
•60 ft^3 <<<<<<
•15 ft^3
•10.4 ft^3


A pyramid has a height of 5 in. and a surface area of 90 in^2. Find the surface area of a similar pyramid with a height of 10 in.

Round to the nearest tenth, if necessary.

•360 in. ^2
•180 in. ^2 <<<<<<
•22.5 in. ^2
•3.6 in. ^ 2

Answer 1

If it is similar, then ALL the dimensions, not just the height, are doubled.
If you double lengths, you quadruple areas
A = k L^2

90 * 4 = 360 in^2

Answer 2

So... is the 1st one is correct?

A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft.

Round to the nearest tenth, if necessary.

•3.8 ft^3
•60 ft^3 <<<<<<
•15 ft^3
•10.4 ft^3

Answer 3

yes, 60 was correct

Answer 4

23/92 = .25
.25^3 = .015625
.015625 * 240 = 3.75 ft^3

Answer 5

I did not read it carefully.