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It means the radius of a circle multiplied by itself, times pi.

It gives you the area of a circle.

Say the radius was 5.

5 squared, or 5x5 = 25.

25x3.14 (pi rounded to 2 decimal places because it goes on so long, 3.14159.....)

=78.5

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15y ago
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lenpollock

Lvl 16
7mo ago

The area of a circle.

Algebraically it is written as

A = pi*r^(2)

The circumference of a circle is

C = 2pir or C = pi*d

Where 'd' = 2r'.

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Q: What does pi r squared equal?
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Is 2Pi r the same as Pi r squared?

No. 2Pi r is equal to Pi d, though.


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