Question

The perimeter of a square field is 10 cm more than the perimeter of a rectangle. The length of the rectangle is 60 cm which is 80% of its width. If a street of width 10 cm surrounds from outside the square, then find the total cost of constructing the street at the rate of Rs. 20 per sq.
cm.

Q: Answer-The perimeter of a square field is 10 cm more than the perimeter of a rectangle. The length of the r...

Let the width of the rectangle x cm Then, 80 of x 60 x 60 10080 75 cm Perimeter of the rectangle 2 length width 2 60 75 270 cm Perimeter of the square 270 10 280 cm The sides of the square 2804 70 cm The area of the square field without street 702 sq. cm 4900 sq. cm The area of the square field with street 70 202 sq. cm 8100 sq. cm The area of the street 8100 4900 3200 sq. cm The total cost of constructing the street 3200 20 Rs. 64000