tolong jawab pakai cara!!!!

L1 =1/2(a+b).t
L1 =1/2(26+12).10
L1 =5(38)
L1 =190cm²

L2 =a. t
L2 =20.10
L2 = 200cm²

Ltotal = 190+200
Ltotal = 390cm²

°Magnolia1 here for help you
Just follow and hope you feel satisfy°

Luas trapesium
1/2 × (a+b) × t
1/2 × (26+12) x 10
1/2 × 38 × 10
= 190cm

Luas jajar genjang
A × t
20 × 10
= 200cm
Jadi 190cm + 200cm = 390cm.