Question

10. A cobblestone path 8 m wide is to be laid along the
inside boundary of a park 76 m long and 58 m wide.
If it costs 35 to lay cobblestones on 1 sq. m, how
much would the entire job cost​

Answer 1

Rs 66080 is the Cost for Entire job if 8 m wide road of cobble stone laid inside 76 * 58 m Park

Step-by-step explanation:

Park size  = 76 m long 58 m wide

Park Area = 76 * 58

= 4408 m²

8 m wide path inside

So inside area  = ( 76 - 2*8)  * ( 58 - 2 * 8)

= 60 * 42

= 2520 m²

Area of Path = 4408 - 2520 = 1888 m²

Cost of Laying cobble stone = Rs 35 m²

Cost of Laying cobble stone 1888 m² = 35 * 1888 =  Rs 66080

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Answer 2

The entire job cost is Rs.66080.

Step-by-step explanation:

Given : A cobblestone path 8 m wide is to be laid along the  inside boundary of a park 76 m long and 58 m wide.  If it costs 35 to lay cobblestones on 1 sq. m.

To find : How  much would the entire job cost ?

Solution :

The length of park = 76 m

The breadth of park = 58 m

The area of the park is $A= l\times b$

$A=76\times 58$

$A=4408\ m^2$

A cobblestone path is 8 m wide.

So, length became 76-8-8=60 m

Breadth became 58-8-8=42 m

The inside area is

$A_i=60\times 42$

$A_i=2520\ m^2$

Area of Path = Area of park - Area of inside park

Area of path = 4408 - 2520

Area of path = 1888 m²

Cost of Laying cobble stone = Rs 35 per m²

Cost of Laying cobble stone 1888 m² is

$C=35\times 1888$

$C=Rs.66080$

Therefore, the entire job cost is Rs.66080.

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