TOLONG PAKE CARA NOMOR 26 TOLONG JAWAB PLIS YA

GSPD^2=J^2-(r1+r2)^2
16^2=20^2-(8+r2)^2
256=400-(8+r2)^2
(8+r2)^2=400-256=144
8+r2=√144=12
r2=12-8=4cm

L1=πr^2
=3,14x8x8
=200,96cm^2

L2=πr^2
=3,14x4x4
=50,24cm^2

L1:L2
=200,96:50,24
=4:1