Question

a rectangular floor 75m long and 50 m wid has a 50cm wide border along its outer boundary.Find the cost of cost of making the border at the rate of ₹45 persq.m​

Answer 1

Answer:

4738 rupees

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Answer 2

Answer:

length of rectangular floor = 75m

width of rectangular floor = 50m

Area of rectangular floor = l*b

= 75*50m

=3750 sq.m

length of outer boundary = 75m+2*50cm

= 75m+1m

=76m

width of outer boundary = 50m+2*50cm

= 50m+1m

= 51m

Area of outer boundary = l*b

=76m*51m

= 3876 sq.m

Remaining area = area of outer boundary-area of rectangular floor

= 3876m-3750m

= 126m

cost per sq.m = Rs45

cost of making border = Rs45*126m

= Rs 5670