r = 40.5dm
A = πr²
A = π(40.5)²
A = π(1,640.25)
A = 5,152.997 or 5,153 dm²
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Problem:
Gel bought a circular carpet whose radius is 40.5dm, if she place it in her living room, how much was the area covered by the carpet?
Solution:
r = 40.5dm
A = πr²
A = π(40.5)²
A = π(1,640.25)
A = 5,152.997 or 5,153 dm²
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