Question

Three sides of a triangular field are of length
15 m, 20 m and 25 m long respectively. Find
the cost of sowing sceds in the field at the
rate of 15 per sq. m.​

Answer 1

Answer:

Rupees 2250

Step-by-step explanation:

A triangle with sides 15m, 20m and 25m is a right-angled triangle.

One of the most common right-angled triangles is 3-4-5 triangle. If you divide 15-20-25 by 3 then will get a 3-4-5 triangle. Hence, they are similar triangles.

Area of triangle = 1/2 × base × height

= 1/2 × 20 × 15 = 150 m²

Cost = 150 × rate = 150 × 15 = 2250 rupees