Solve the proportion: 30 is to 100 as 90 is to ?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?

Select all of the following expressions that are equal to 2.5.