TOLONG PAKE CARA NOMOR 26 TOLONG JAWAB PLIS YA

26. 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
L1=3,14x8x8
L1=200,96cm^2

L2=πr^2
L2=3,14x4x4
L2=50,24cm^2

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


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