The volume should be l(w)(h)= v so 6.3(14.7)(8.4)=29.4 in
See, please, the solution for the task number 2.
$$$$$$$$$+$$$$=13 $ this is one way
Circular pen means you are going to use Area = Pi(r^2).
So 78.5 = pi(r^2). Divide by pi on both sides to get r^2 = 78.5/pi. Take the square root of that to get r or radius = approximately 4.99. If you need an exact answer then use
![\sqrt{ \frac{78.5}{ \pi } }](https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%5Cfrac%7B78.5%7D%7B%20%5Cpi%20%7D%20%7D%20)
for the next part because you are not done yet.
Plug whatever R you use into the circumference formula of Circumference = 2(pi)(r).
If you use 4.99, you do 2(pi)(4.99) which is approximately 31.35. If you use the exact answer, you do 2(pi)(
![\sqrt{ \frac{78.5}{ \pi} }](https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%5Cfrac%7B78.5%7D%7B%20%5Cpi%7D%20%7D%20)
) which gives you approximately 31.41.
Either way you'll need about 31 meters of chicken wire but the 31.40796 or ~31.41 is closer to the exact answer.