Question

Three sides of a triangular field are of length 15 m, 20 m and 25m long respectively. Find the cost of sowing seeds in the field at the rate of 5 rupees per sq.m.

• A. Rs.300
• B. Rs.600
• C. Rs.750
• D. Rs.150

Answer 1

Answer:

C. Rs.750

The values are 15 and 20 and 25 all are triplets value so its is an Right angled triangle.

Area of the field $=\frac{1}{2}[bh]$

$=\frac{1}{2}\times{15}\times{20}$

$=150sqm$

Hence, Cost of sowing seeds = 150 × 5 = 750 Rs.