Question

Because of laying grass in a rectangular Park at rupees 5 per square metre is rupees 2400 find the cost of making its boundary at 2.25 per metre if it is 15 m wide

Answer 1

Step-by-step explanation:

first find area of the park

area = 2400/5= 480

then find length by area formula

area = l×b

480=l×15

l= 32m

then find perimeter and multiply with the cost we will get the cost

Answer 2

The cost of making its boundary is Rs.211.5

Step-by-step explanation:

Area laid by grass at Rs.5 = 1 sq.m.

Area laid by grass at Rs.2400 =$\frac{1}{5} \times 2400=480 sq.m.$

Width of park = 15 m

$Length = \frac{Area}{Width}=\frac{480}{15}=32 m$

So, Length of park is 32 m

Perimeter of park = 2(l+b)=2(32+15)=94 m

Cost of making boundary of 1 m = Rs.2.25

Cost of making boundary of 94 m =$94 \times 2.25=211.5$

Hence  the cost of making its boundary is Rs.211.5

#Learn more:

A rectangular field is 80 m long and 35 M wide find the cost of laying grass in IT @ rupees 2 per square metre

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