Yang no 10 pakai cara

L gabungan = L 1/4 lingkaran + L segitiga x L trapesium.
L 1/4 lingkaran = 1/4 × 22/7 × 14 × 14
= 11 x 14 = 154 cm^2

L segitiga = 1/2 × a × t
= 1/2 × 20 × 14
= 140 cm^2

L trapesium = 1/2 x (jml dua grs sejajar) x t
= 1/2 x (34+28) x 6
= 1/2 x 62 x 6
= 3 x 62
= 186 cm^2

L gabungan = 154 + 140 + 186
= 480 cm^2