Question

The cost of painting the top surface of a triangular board at 80paisa per square meter is ₹179.40. If the height of the board measures 24.5m, find its base???

Answer 1

First divide the total cost by the rate of painting that is, 179.40/0.8. The answer you get is the area. Then divide the area by the height and multiply the answer with 2 to get the base.

Answer 2

Area = 179.40÷0.80 = 224.25
Area = 1/2 × b × H
224.25 = 1/2 × b × 24.5
18.30 = b