Question

2.
A rectangular field is 150 m by 80 m. Find the cost of:
(a) ploughing it at the rate of 12 per m².
(b) fencing it with wire at the rate of 22 per metre.​

Answer 1

1st. we will find area

2nd. we will × area with price

3rd. we will change sq m in m and then × it by price

Answer 2

Step-by-step explanation:

a) area of field = l×b = 80×150 = 1200 m^2

cost of ploughing = 1200×12=14400

b) perimeter of field = 2(l+b) = 2(150+80)

= 2×230 = 460 m

cost of fenching = 460 × 22 = 10120