Answer:
28.27cm³
Step-by-step explanation:
Area of a circle:

First, find the area of a full circle with this given radius:

Now, to find the radius of a quarter circle with the same radius, just divide by 4:

The radius of the quarter circle is about 28.27cm³
Answer:

Step-by-step explanation:

First, we need to make the demoninators the same so we times 4 by 5 and whatever we do to the bottom, we do to the top, and 5 by 4.



demoninator now doesn't change unless you're multiplying or dividing.
The answer is D. m<M'N'O'=m<MNO
Hope I helped?