Mr. jones is planning to plant grass and place a fence in a small area for his dog the rectangular dimensions are 12 x15 feet the grass cost 50 cents per square foot how many feet of fence are needed for the total perimeter

Step-by-step explanation:

The length fence are needed for the total perimeter is:

                                   54 feet

It is given that the dimensions of the rectangular are are:

                 12 feet x 15 feet

Now, the fence is to be placed across the perimeter of the rectangular area this means that the perimeter of this rectangular region is equal to the length of the fence required.

We know that the perimeter of the rectangle with dimension a×b is given by:

Perimeter=2(a+b)

Here we have: a=12 feet

and b=15 feet

Hence, the perimeter is:

Perimeter=2(12+15)

i.e.

Perimeter=2(27)

i.e.

              Perimeter= 54 feet.