Asked by Vanessa
One pizza has a diameter twice the diameter of a smaller pizza. what is the rato of the area larger pizza to the area of the smaller pizza?
Answers
Answered by
Reiny
4/1
proof:
let the radius of the smaller be r
let the radius of the larger be 2r
area of smaller = πr^2
area of larger = π(2r)^2 = 4πr^2
ratio of larger to smaller = 4πr^2/(πr^2) = 4/1 or 4 : 1
proof:
let the radius of the smaller be r
let the radius of the larger be 2r
area of smaller = πr^2
area of larger = π(2r)^2 = 4πr^2
ratio of larger to smaller = 4πr^2/(πr^2) = 4/1 or 4 : 1
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