Question

A playground is 38 M 50 cm long and 61 M 50 cm wide find the cost of levelling it at Rs 40 per metre square and also find the number of rounds along the boundary one should take to run 2 kilometre

Answer 1

Let divide question in 2 parts

1. Cost of leveling:-

Length of field,l=38.50m or 38.5m

Breadth of field,b=61.50m or 61.5m

Area of rectangular field

=l×b

=38.5m×61.5m

=2367.75m square

Cost of leveling 1 m square= RS.40

Cost of leveling 2367.75 square

=Rs40×2367.75

=94,710/-

2.for running 2km rounds required

=2Km or 2000m/perimeter of rectangular field

=2000m/2(l+b)

=2000m/2(38.5m+61.5m)

=2000m/2(100m)

=2000m/200m

=10

Therefore,20 rounds should be taken to rum 2km

Answer 2

Answer:

L=38.50m

B=61.50m

cost of leveling=?

Step-by-step explanation:

solution

Area of rectangle=L×B

38.50×61.50=2367.75

cost of leveling=2367.75×40

94710