Question

pilas chicos estoy en prueba ayudeeeeen

Answer 1

Area no sombreada= 9+3=r
r=12 diametro=24 area=24^2(pi) =576pi
Area sombreada=9+3+3+3=r
r=18 diametro=36 area=36^2(pi)=1296pi

Rpta= 1296pi-576pi
=720pi