hi Ashley here and today we are going to practice finding area the amount of
space a shape takes up let's go area is what we call the amount of space inside
of a shape in this video we are going to focus on the area of squares and
rectangles and you can see here on the right on this grid I have a square that
has a length and width of three squares long and you can count in sign there is
a total of 1 2 3 4 5 6 7 8 9 squares inside my big square so I have a total
of nine squares this little bitty two here next to the nine means squared so
what we would say is the area of this square is 9 squared ok now if you look
down here our formulas we have two different ones depending on if you are
working with a rectangle or a square so our rectangle here is area a is equal to
L length times W width so you do length times width and that will give you the
area of your rectangle for a square we have side squared and that really just
means you take your side and you multiply it by itself and that will give
you your area let's try one
our problem here says if a rectangle has a width of two centimeters and a length
of three centimeters what is the area of the rectangle now you can see we already
have a rectangle here on the right and since the grid is already filled in with
two going this way and three going this way we could just count up how many
boxes are inside there's one two three four five six but we don't always have a
picture so what we know is there are two groups of three right so the first row
has three and then the second row has three two groups of three and to find
that you would multiply let's fill in our formula a for area is equal to we
have a width of two and length of 3 so 2 times 3 2 times 3 is 6 so we're area is
equal to 6 centimeters is that it is that rectangle 6 centimeters long
no it's 6 square centimeters so we've got to put our little 2 here to say it
is 6 centimeters squared let's try one more this time we do not have our shape
drawn for us our problem size if a square has a side length of 6 inches
what is the area of the square well let's use our formula area is equal to 6
inches squared which basically is the same thing as saying 6 times 6 which is
our area is
thirty-six inches squared and you've got it now go practice what you've learned
with our online games and quizzes and remember to always be clever