

Example: <BR>Here we are to find the area of a rectangle <BR>with base = 10cm and height = 4 cm.
So our solution:<BR>First we want to draw a sketch of the problem. <BR>
We see that the base is longer than the <BR>height is high. So we want our rectangle <BR>longer than it is high.
It doesn’t have to be exactly 10x4. <BR>10cm down here and 4 cm here<BR>
And we are looking to find the area of this <BR>rectangle. <BR>
So the first thing we need to do is to have our <BR>formula for the area.<BR>
The formula for the area of a rectangle is – <BR>anybody remember?  base x height.<BR>
So base x height. That is our formula.<BR><BR>
Here – what do we have? We have the area of <BR>our rectangle and now we are going to <BR>substitute in our base and our height.
So for base, we are going to put in 10 cm and <BR>for height, we are going to put in 4 cm.<BR>
Now, we group these by numbers and units. <BR>So we have 10 x 4 (that’s the two numbers) <BR>and cm x cm.
So we have 10 x 4 = 40 and cm x cm = cm ^2 <BR>(squared).<BR>
So that is our answer to what is the area of <BR>this rectangle. <BR>