Question

A STORY OF UNITS

Answer 1

Answer:

$40 will be the total cost of the ribbon.

Step-by-step explanation:

To find the cost of ribbon to be put on the edges of rectangular banner, we need to:

1. Find the perimeter of the rectangle.

2. Multiply the perimeter with the per foot cost to find the total cost.

Let us find the perimeter first:

Perimeter of a rectangle is given as:

$P = 2 \times \text{(length+width)}$

Here, the dimensions of rectangle are 4ft by 6ft.

So, perimeter = $2 \times (4+6) \Rightarrow 20\ ft$

It is given that per foot cost is $2.

Total cost of the ribbon = $2 \times 20 \Rightarrow 40$

$40 will be the total cost of the ribbon.