Mathematics

17 May, 17:50

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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