Question

I’m confused on how to count the units, I think the area would be multiplying 2x3. Can you help me out?

Answer 1

It can be seen from the diagram that the side length of each small square is 1 unit.

Hence, the length and width of the shaded rectangle, respectively are l=3 and w=2.

Recall the formula for the area of a rectangle with length, l and width, w:

`A=l* w`

Substitute l=3 and w=2 into the area formula:

`A=3*2=6\text{ square units.}`

Hence, the area of the shaded rectangle is 6 square units.

The Perimeter of a rectangle is:

`P=2(l+w)`

Substitute l=3 and w=2 into the formula:

`P=2(3+2)=2(5)=10\text{ units}`

Answer:

The area is 6 square units.

The perimeter is 10 units.