want to do G and i only

Step-by-step explanation:
A = ℓ × w
A = 8 × 4
A = 32 cm²
A = ½ × 5 × 12
A = 5 × 6
A = 30 cm²
#G
[tex]\\ \sf\longmapsto Area=LB[/tex]
[tex]\\ \sf\longmapsto Area=8(4)=32cm^2[/tex]
#I
[tex]\\ \sf\longmapsto Area=\dfrac{1}{2}BH[/tex]
[tex]\\ \sf\longmapsto Area=\dfrac{1}{2}(12)(5)=30cm^2[/tex]