Answer: x = 30
2/12 x 5/x
(Cross Multiply)
2x = 60
x = 30
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
