Asked by Joseph

A 4'' diameter round pizza with area As and a 12'' diameter round pizza with area Ab. What is the ratio Ab/As?
How many times bigger is the larger pizza?

Answers

Answered by drwls
Area is proportional to Diameter^2.

Ab/As = (Db/Ds)^2

Db/Ds = 12/4 = 3

What is the square of 3?
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