# Thread: Area of a semi circle

1. ## Area of a semi circle

i know that the formula for finding the area of a circle is 1/2pi(r^2)

now if i get an answer of 2pi and if i wanted to find half of the semi circle's area can i just divide 2pi by 2 and i would just get pi.... is that appropriate????

2. ## Re: Area of a semi circle

Yes, if you split an area into two equal portions, then each half has the area of the original divided by 2.

3. ## Re: Area of a semi circle

another question.... if i add

1 + 2pi + 4 would i get 7pi?

4. ## Re: Area of a semi circle

No, you would get 5 + 2π.

5. ## Re: Area of a semi circle

yes that's what i thought... thank you