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FromTheMoon [43]
3 years ago
9

How is this correct?

Mathematics
1 answer:
ale4655 [162]3 years ago
5 0
The answer is B. [x] 2x^2 (21 _ 2pi)
proof
2x^2 (21 _ 2pi)= 42x^2   -   4pix^2=  <span>rectangular area- circular area</span>
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