Answer:
12
Step-by-step explanation: this is because if the circle is 24 then half the circle should be 12 if not then I don’t know your on you own
The area of a normal full circle is given by;
[tex]a = \pi \: r {}^{2} [/tex]
but since i want a semi circle, i would want that area to be split into 2, right?
So our new equation for the area of a semi circle is given by;
[tex]a = \frac{\pi \: r {}^{2} }{2} [/tex]
where r is the radius of our semi-circle.
The radius is half the diameter, so the radius here would be 24/2 =12
[tex]a = \frac{\pi \times 12 {}^{2} }{2} = \frac{144\pi}{2} = 72\pi = 72 \times 3.14159... = 226.194[/tex]
