Question

The cost of ploughing a triangular field of sides 275m, 660m,715m,at the rate of rs. 200pr hectare

Answer 1

Answer:

₹ 1815

Step-by-step explanation:

a=275 cm

b= 660 cm

c= 715 cm

s= 275+660+715 = 1650/2 = 825

-- using Heron's Formula

=>√{825*(825-275)*(825-660)*(825-715)}

=√ {825 * 550 * 165 * 110}

= 90,750 m^2

--- 1m^2 = 0.0001 hectare

=> 90750 m^2 = 9.075 h

rate of ploughing - ₹ 20/h

cost of ploughing the land = 9.075 * 200

= ₹ 1815/-

Answer 2

Answer:

above answer is correct