plese aku ngga ngerti

9. L1 = s x s = 14 x 14 = 196
L2= 1/2 x p x r2 = 1/2 x 22/7 x 7 x 7 = 77
L3= 1/4 x p x r2 = 1/4 x 22/7 x 14 x 14 = 154
154+ 77 + 196 = 427 ( c )
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10. L = 1/2 x (a+b) x t
=1/2 x 190 x 61
= 95 x 61
= 5.795 m2 ( c )
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