Posted by **anonymous** on Sunday, March 16, 2014 at 6:20pm.

A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft.

Round to the nearest tenth, if necessary.

3.8 ft3

60 ft3

15 ft3

10.4 ft3

A pyramid has a height of 5 in. and a surface area of 90 in2. 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

- Please help me -
**anonymous**, Sunday, March 16, 2014 at 6:38pm
any1?

- Math 2 questions -
**Reiny**, Sunday, March 16, 2014 at 7:19pm
volume of 2 similar solids is proportional to the cube of their corresponding sides, so

x/240 = 23^3/92^3 = (23/92)^3 = (1/4)^3 = 1/64

64x = 240

x = 3.75

the new volume is 3.75 ft^3

If I told you that the surface area of 2 similar solids is proportional to the square of their corresponding sides, can you set it up like I just did ?

let me know what you got.

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