Question

The area of a rectangular plot is 340 m2 and its breadth is 17m find the cost of surroundings the plot with a fence at rs 5.70 per metre

Answer 1

Let the length be l m

According to question
l*b = 340
l *17=340
l = 20 m

Now,
Perimeter of plot = 2(l+b)
= 2(20+17)
= 2(37)
= 74 m

Rate of fencing = Rs 5.70 / m

Cost = Rate * Perimeter
Cost = 5.70 * 74
Cost = Rs 421.8

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Answer 2

area is 340m²
breadth is 17 m
length will be 340/17= 20m
perimeter of plot will be 2*(l+b)
=2*(17+20)
=2*37
=74
cost for 1m is 5.70
cost for 74 m = 5.70*74
= Rs 421.80