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How do you find the area of a rectangle?
How do you find the area of a square?
How do you find the area of a triangle?
How about a circle?
LEARNING TARGET
LEARNING TARGET
I can find the area of rectangles, triangles, and circles.
I can find the area of rectangles, triangles, and circles.
I DO
I DO
what is area?
what is area?
Area is the size of a surface. Or, you could say area is the amount of space you'd need to cover with paint if you were painting a surface.
Like volume, you find the area of a figure by using a formula, which is different for each type of figure.
How do you find the area of a rectangle?
How do you find the area of a rectangle?
The formula for the area of a rectangle is:
A = L x W
How do you find the area of a Triangle?
How do you find the area of a Triangle?
The formula for the area of a triangle is:
A = ½ B x H
Be careful: the height is always perpendicular to the base (and it's necessarily a side).
How do you find the area of a circle?
How do you find the area of a circle?
The formula for the area of a circle is:
A = πr^2
Be careful: the radius (r) is the distance half way across the circle, not the whole way (which is called diameter).
Let's try some examples!
Let's try some examples!
WE DO
WE DO
Start your work with your neighbor, and work on your own when you're ready!
YOU DO
YOU DO
Complete these problems, these problems, and these problems (for a 4!)
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