Question

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

Answer 1

Answer:

Step-by-step explanation:semipermeter=60/2=30

Area=√30(30-15)(30-25)(40-20

Total cost=Area x 5

Answer 2

The cost of sowing seeds in the field at the rate of 5 rupees per sq.M is Rs.750

Step-by-step explanation:

Sides of triangular filed are 15 m , 20 m and 25 m.

Area of triangle = $\sqrt{s(s-a)(s-b)(s-c)}$

Where $s=\frac{a+b+c}{2}$

Substitute the values :

$s=\frac{15+20+25}{2}$

$s=30$

Area of triangle = $\sqrt{30(30-15)(30-20)(30-25)}$

Area of triangle = $150 m^2$

Cost of sowing 1 sq.m. = Rs.5

Cost of sowing 150 sq.m. = $5 \times 150 = Rs.750$

Hence the cost of sowing seeds in the field at the rate of 5 rupees per sq.M is Rs.750

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