Apipe is 31 inches long. it is to be cut into three pieces such that the longest is three times as long as the shortest and the middle-sized piece is 1 inch longer than the shortest. how long is the middle-sized piece?

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25