Respuesta :

1234519
20 I believe, if the area is equal to the radius squared times Pi then the radius is 10 (found by the square root of 100) and the diameter is two times the radius
kenki
S=  [tex] \pi r^{2} [/tex]
100 pi =  [tex] \pi r^{2} [/tex]
100 = r 2
r = 10 cm
d= 2*10=20 cm