The area of the figures are: 1. 36 square units; 2. 72 square units; 3. 190 square units.
What is the area of a trapezium?
The area of a trapezium is calculated by taking the average of the lengths of the two parallel bases and multiplying it by the height of the trapezium. The formula is:
Area = 1/2(a + b) * h
1. a = 8 units
b = 2 + 8 = 10 units
height (h) = 4 units
Area = 1/2(8 + 10) * 4
Area = 36 square units
2. a = 9 + 3 = 12 units
b = 9 + 3 = 12 units
height (h) = 6 units
Area = 1/2(12 + 12) * 6
Area = 72 square units
3. a = 3 + 15 + 5 = 23 units
b = 15 units
height (h) = 10 units
Area = 1/2(23 + 15) * 10
Area = 190 square units