" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r2 = 12 cm
π = 3,14
L1 = 1/2 . π . r1²
L2 = 1/2 π r2²
L arsir = L1 - L2
L arsir = (1/2 x 3.14 x 20²) - (1/2 x 3.14 x 12²) = 628 - 226,08 = 401,92 cm²
jadi jawabannya adalah C. 401,92 cm²