Question

100. The area of a rectangular garden is 80m2. The length is 20m. Find its width. If
Rs 90 per m to fence the garden, find the total cost of fencing.

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Answer 1

Answer:

Area of rectangular garden =80m2

length of rectangular garden=20m

so the formula to find width is=area/length =80m2/20=40m

perimeter =2(l+b)

=2(20+40)

=2(60)

=2×60=120m

cost of fencing =120×90=10,800

Answer 2

Answer:

the length = 20m

let , the width ( breath ) = x

area of rectangular garden = l * b

80 m^2. = 20 m * x

80 m^2 / 20 m = x

4 m = x

width of rectangular garden = 4 m

perimeter of rectangular garden = 2 ( l + b )

= 2 ( 20 m + 4 m )

= 2 * 24 m

= 48 m

cost of fencing = ₹ 90 * 48 m

= ₹ 4320

..... hope it helps you............................