Question

A path 5m wide runs along inside a squre park of side 70m .Find the area of the path .also find the cost of cementing it at the rate of Rs.150 per 1m2.​

Answer 1

Answer:

1300m² , ₹1300

Step-by-step explanation:

side of square (s)= 70m

area of square = s * s

= 70 *70

= 4900m^2

side of interior square = side of square shaped park - 2(width of park )

= 70-(2*5)

= 70- 10

= 60m

Area of interior square = 60*60

= 3600m²

Now, area of path = area of square shaped park- area of interior square

= 4900- 3600

= 1300m². ans.

rate of cementing= ₹1/m²

Total cost of cementing the path= total area of the path * rate of cementing

= 1300 * 1

= ₹1300. ans.