tolong dijaqab ya guys saaya krng ngerti. ..

L kecil = π r ^2
= 3,14 x 5 x 5
= 78,50 cm^2

L besar = π r^2
= 3.14 (5 + 5,5)^2
= 3,14 x (10,5)^2
= 3,14 x 110,25
= 346,185 cm^2

L diarsir = 346,185 - 78,50
= 267,685 cm^2