amayanelson amayanelson

15-08-2017
Mathematics

contestada

The expression πr² is used to determine the area of a circle, where r is the length of the radius. What does the expression π(5b)² represent?

a) the area of a circle with radius 5

b) the area of a circle with radius 25

c) the area of a circle with radius 5b

d) the area of a circle with radius 25b²

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sklewis99oupkxy sklewis99oupkxy

15-08-2017

The answer is c because all you are doing here is subbing the variable r for 5b.

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