What is the area of all the semi circle and triangle

First we will find the area of the semi circles.
The formula for a circle's area is A=
So the radius of the bottom semi circle is 5 because 10 is the diameter.  

We can assume 3.14 is pi.


A=78.5

Then we divide that in half because it's only a half circle.
A=39.25
Now we can find the area of the other two semi-circles.
We use the same formula.

A=132.665
Divide in half because it is a semi-circle.
A=66.3325
The last semi-circle has the same diameter as the second so the area will be the same.
A=66.3325
Now we find the area of the triangle.
The formula for the area of a triangle is

The height is 12 and the base is 10.

Simplify

So A=60
Now we add up all the areas.
39.25+66.3325+66.3325+60=231.915
Don't forget to add our unit!

The area of all semi-circles and the triangle is 231.915m

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