I’m looking for the same answer
Yes, when the radius is two.
You set 2*pi*r equal to pi*r^2.
Then you find the radius, which is two, the only possible solution for this scenario.
I got
x=100
y=80
but it's not listed
Hello,
Answer:
4,8
Step-by-step explanation:
<u>what would be 12% of 40 ? </u>
12% × 40 = 12/100 × 40 = 0,12 × 40 = 4,8
Answer:
283 square inches
Step-by-step explanation:
Stacking 8 plates with height of each being 0.5 inch will form a cylinder with height 4 inches.
The radius of the cylinder is half the diameter
![r = \frac{10}{2} = 5in](https://tex.z-dn.net/?f=r%20%3D%20%20%5Cfrac%7B10%7D%7B2%7D%20%20%3D%205in)
The total surface area of this cylinder is:
![= 2\pi \: r(r + h)](https://tex.z-dn.net/?f=%20%3D%202%5Cpi%20%5C%3A%20r%28r%20%2B%20h%29)
We substitute the values to get:
![= 2 \times \pi \: \times 5(5+ 4) \\ = 10 \times 9\pi \\ = 90\pi \\ = 282.6 {in}^{2}](https://tex.z-dn.net/?f=%20%20%3D%202%20%5Ctimes%20%5Cpi%20%5C%3A%20%20%5Ctimes%205%285%2B%204%29%20%5C%5C%20%20%3D%2010%20%5Ctimes%209%5Cpi%20%5C%5C%20%20%3D%2090%5Cpi%20%5C%5C%20%20%3D%20282.6%20%7Bin%7D%5E%7B2%7D%20)
She will need approximately 283 square inches of wrapping