The volume of a cylinder varies jointly with the square of its radius and with its height: v=kr2h cylinder a has a volume of 254.34 cubic inches and has a radius of 3 inches and a height of 9 inches. what is the volume of cylinder b, which has a radius of 4 inches and a height of 5 inches? select one: a. 3.14 cubic inches b. 62.8 cubic inches c. 251.2 cubic inches d. 188.4 cubic inches

For clarity, please use " ^ " to indicate exponentiation: V=k*r^2*h

Our first task is to determine the value of the constant of proportionality, k. Subst. the given info:

V 254.34 in^3

V=k*r^2*h => k = = = 3.14, which is approx pi

r^2*h 3^2* 9

then our formula becomes:

V = π*r^ 2*h

and if r= 4 and h =5, then the volume is V = π(16)(5) = 80π in^2.

ryan had a head start of 10 meters.

answer: 48

just remember to use pemdas:

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