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Question

Find the cost of leveling a playground at 3persquaremetre if it is 30m long and 15m wide . Also, find the cost of fencing it at 1.20permetre.


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Solution

Step 1: Area of playground

Length of playground =30m

Breadth of playground =15m

Area of playground =30×15=450m2

Step 2: Cost of levelling

Cost of levelling 1m2 =3

Cost of levelling 450m2=3×450=1,350

Step 3: Perimeter of playground

Length of playground(l)=30m

Breadth of playground(b)=15m

Perimeter of playground=2(l+b)

=2(30+15)=2×45=90m

Step 4: Cost of fencing playground

Cost of fencing 1m=1.20

Cost of fencing 90m=1.20×90

=108

Thus, the cost of levelling is 1,350 and the cost of fencing is 108.


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