First make it that both denominators are the same.

Then add both numerators

Your final answer should be
Area of trapezium= 1/2 × (a+b) × h
= 1/2 × (12 + 8) × 8
= 1/2 × 20 × 8
= 10 × 8
= 80 cm^3
Hope it helps you
Answer:
yes
Step-by-step explanation:
You need to add the number of blocks or lines are betweenhem.