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Sagot :
Step-by-step explanation:
Area of the circle = pi x r²
= pi x 21²
= pi x 441
= 1386cm²
Step-by-step explanation:
Area of Circle
[tex] = \pi {r}^{2} \\ = \pi(21) {}^{2} \\ = 441\pi \: cm {}^{2} or \: 1385.442cm {}^{2} [/tex]
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