Question

The ratio of the heights of two similar rectangular prisms is 4:5. What is the ratio of their lateral areas?

Answer 1

area = length × length

Answer 2

(More precisely, the units of area are the units of length squared)

Answer 3

Thanks ; i have 1 more: Each dimension of a rectangular prism is increased by 80%. What percent of the original volume is the volume of the new prism?

A.51.2 percent

B.324 percent

C.583.2 percent

D.64 percent

Answer 4

Similar reasoning. Volume is cubic units, so you need to cube the scale factor.

Answer 5

N.B. that the scale factor if being increased by 80% is k=1.8

Answer 6

Thank you :)