Question

5. Becca wants to edge her hexagonal garden

with brick. All sides are equal. The brick costs

$6 per yard. What is the perimeter of the

garden? How much will it cost to buy the

edging she needs?

Answer 1

`(a)\ Perimeter = 6l`

`(b)\ Cost = \$36l`

Explanation:

Given

`l \to sides`

Solving (a): The perimeter

The shape has 6 sides; since the sides are equal, the perimeter is:

`Perimeter = 6 * l`

`Perimeter = 6l`

Solving (b): Cost of fencing

We have:

`Unit\ cost = \$6/yd`

So, the cost is:

`Cost = Unit\ cost * Perimeter`

`Cost = \$6/yd * 6l`

`Cost = \$36l`

To get the actual answer, substitute the length of one side of the hexagonal in the calculated expressions