Respuesta :

ezioassasin55

Step-by-step explanation:

Area of the circle = pi x r²

= pi x 21²

= pi x 441

= 1386cm²

tanweeleong195oxyqwp

Step-by-step explanation:

Area of Circle

[tex] = \pi {r}^{2} \\ = \pi(21) {}^{2} \\ = 441\pi \: cm {}^{2} or \: 1385.442cm {}^{2} [/tex]