The answer is 7th degree and the answer is 2(9x^7-4x^3+4)
The SA of a sphere is 4 times the area of the base of if you cut it in half. So that would mean that that would be (9/4)pi yd2. Pi*r^2=area of a circle, so that means the radius is 3/2 yds.
<span>The volume of a sphere is (4/3)*pi*r^3. If we plug in the radius, we get: </span>
<span>(4/3)*pi*(3/2)^3 </span>
<span>(4/3)*pi*(27/8) </span>
<span>(27/6)pi, or 4 and 1/2 pi </span>
<span>If you want an actual number with pi used, you get about 14.137166952</span>
Answer:
![h=17\ in](https://tex.z-dn.net/?f=h%3D17%5C%20in)
Step-by-step explanation:
we know that
The total surface area of a cylinder is equal to
![SA=2\pi r^{2}+2\pi rh](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20r%5E%7B2%7D%2B2%5Cpi%20rh)
where
r is the radius of the base of cylinder
h is the height of cylinder
we have
![SA=690.8\ in^2](https://tex.z-dn.net/?f=SA%3D690.8%5C%20in%5E2)
----> the radius is half the diameter
assume
![\pi=3.14](https://tex.z-dn.net/?f=%5Cpi%3D3.14)
substitute the given values and solve for h
![690.8=2(3.14)(5^{2})+2(3.14)(5)h](https://tex.z-dn.net/?f=690.8%3D2%283.14%29%285%5E%7B2%7D%29%2B2%283.14%29%285%29h)
![690.8=157+31.4h](https://tex.z-dn.net/?f=690.8%3D157%2B31.4h)
Solve for h
![31.4h=690.8-157](https://tex.z-dn.net/?f=31.4h%3D690.8-157)
![31.4h=533.8](https://tex.z-dn.net/?f=31.4h%3D533.8)
![h=17\ in](https://tex.z-dn.net/?f=h%3D17%5C%20in)
Answer:
960
Step-by-step explanation:
You have to figure out what 1/4th of 640 is, which is 160.
It says that number is 1/6th of boys, so you multiply by the inverse.
160x6 = 960
Answer:
m<S=66.5
Step-by-step explanation:
The sum of the angles = 360
(6x-6)+(4x-10)+(5x-11)+(5x+13)+(4x+2) = 360
24x-12=360
24x=372
x=15.5
S=5x-11 = 5*15.5-11=66.5