Question

30. A field is in the shape of a trapezium having parallel sides 90 m and
30 m. These sides meet the third side at right angles. The length of the
fourth side is 100 m. If it costs 5 to plough 1 m? of the field, find the
total cost of ploughing the field.​

Answer 1

Step-by-step explanation:

EB = AB - AE = 90 - 30 = 60m . therefore, → Area of trapezium = (1/2) * sum of parallel side * height = (1/2) * (30 + 90) * 80 = (1/2) * 120 * 80 = 60 * 80 = 4800 m².