luas bangun trapesium di atas adalah (SPM)

Diketahui
a = 17 cm
b = 6 cm + 17 cm + 6 cm = 29 cm
t = 8 cm

Luas trapesium
= (a + b)/2 x t
= (17 cm + 29 cm)/2 x 8 cm
= 46 cm / 2 x 8 cm
= 23 cm x 8 cm
= 184 cm²

L=1/2 × jumlah sisi sejajar × t
= 1/2 × (6+6+17+17) × 8
= 1/2 × 46 ×8
= 1/2× 368
= 184