What is the area if the fabric she cut out

Question

7 centimeters wide and 3 centimeters long

Answer 1

The area is the flat space of the fabric. We want to know how big that flat space is. Since you are measuring in centimeters, we want to see how many centimeters it will take to fill up the flat space.

The fabric is 7cm wide, so you know that you can fit 7cm into the flat space from left to right like this:

-- -- -- -- -- -- --

1 2 3 4 5 6 7

The fabric is also 3cm long, so you know that you can fit 3cm into the flat space from top to bottom like this:

1. l

2. l

3. l

If you fill in the entire flat area of the fabric you will get three rows of 7 like this:

1. -- -- -- -- -- -- --
2. -- -- -- -- -- -- --
3. -- -- -- -- -- -- --

1 2 3 4 5 6 7

You will find the area by adding all of the centimeters together. You could count each centimeter one by one. But since you know that there are 3 rows of 7, you just need to add 7+7+7.

Or, to make it easier, you can multiply 3x7. You are multiplying the number of rows (the length) times the number of cm in each row (the width). This is how we get the equation for area: Length x Width = Area.

3 x 7 = 21

OR

7+7+7=21

The area of this piece of fabric is 21cm squared.

Answer 2

Hi Kawmane,

The question is asking us to find the area. We are given the dimensions, 7 cm in width and 3 cm in length.

The question is asking us to remember that area equals length times width.

A = l*w

substituting

A= 3*7

A= 21 cm^2.of fabric cut out

Hope this helps