Question

The sides of triangle shaped sheet are 5cm, 12 cm , and 13 cm. Find the cost of painting on the sheet at the rate of ₹30 per cm^2

Answer 1

Answer:

Step-by-step explanation:

This triangle is a right angled triangle as it follows Pythagoras Theorem:

5² + 12² = 13²

So,

Area of triangle = 1/2 * base * height

area = 1/2 * 5 * 12

area = 30 cm²

Rate of painting sheet = ₹30 / cm²

Cost of painting triangle = Rate * Area

                                         = ₹(30 * 30)

                                         = ₹900