tolong pake cara cara cari luas besok di kumpulkan

L1 (trapesium) = ( a + b ) × t ÷ 2 = ( 5 + 20 ) × 2 ÷ 2 = 25 × 2 ÷ 2 = 25 cm2
L2 (persegi panjang) = p × l = 20 × 10 = 200 cm2
Luas = 225 cm2

L = L. persegi panjang + L. trapesium
L= pxl + 1/2x(a+b)xt
L = 20x10 cm + 1/2x(5+20)x8 cm
L = 200 cm + 1/2x25x8 cm
L = 200 cm + 1/2x200 cm
L = 200 cm + 100 cm
L = 300 cm²