Question

Use conversions to solve the problem. Jane wants to edge her garden with stone. All sides are equal. The stone costs ​$6 per yard. What is the perimeter of the​ garden? How much will it cost to buy the edging she ​needs?

Answer 1

Perimeter:
`p = 4\cdot l`, Total costs:
`C = 24\cdot l`

Explanation:

The garden has a square form. Let be
`l` the length of any of the sides, measured in yards. The perimeter of the garden, measured in yards, is:

`p = 4\cdot l`

Now, perimeter has a length unit and total costs of edging the garden, measured in US dollar, is:

`C = \left(6\,(USD)/(yard) \right)\cdot 4\cdot l`

`C = 24\cdot l`