luas nya plis pakek jalan

L1 = p x l
= 30 x 16
= 480 cm2
L2 = 1/2 x Phi x r2
= 1/2 x 22/7 x 14 x 14
= 11 x 14 x 14 : 7
= 308 cm2
L3 = 1/2 x a x t
= 1/2 x 14 x 16
= 112 cm2
L gabungan = L1 + L2 + L3
= 480 + 308 + 112
= 900 cm2 [ D ]