Answer:
50.24
Step-by-step explanation:
A= πr2
314/100×4×4=50.24
Solution

For this case we can take square root in both sides and we have:
![3x-5=\pm\sqrt[]{19}](https://tex.z-dn.net/?f=3x-5%3D%5Cpm%5Csqrt%5B%5D%7B19%7D)
And solving for x we got:
![x=\frac{5\pm\sqrt[]{19}}{3}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%5Cpm%5Csqrt%5B%5D%7B19%7D%7D%7B3%7D)
then the solutions for this case are:
B and E
I guess any ten pounds can be the same weight as light stuffs combined together such as multiple breaks, a school bag, etc.
You would multiply 2 1/2 and 3 3/4, which would give you 9.375 or as a mixed number 9 7/8