Answer:
I ha.te U bit.ch
Step-by-step explanation:
Also, do U like these images?
Answer:
22
Step-by-step explanation:
418 divided by 19 is 22.
Answer:
-3 1/8.
Step-by-step explanation:
−7/8 − 2 1/4
= -7/8 + -9/4
= -7/8 - 18/8
= -25/8
= -3 1/8.
Given:
Volume of a sphere is
times the surface area.
To find:
The surface area and the volume of the sphere.
Solution:
Volume of a sphere:
...(i)
Surface area of a sphere:
...(ii)
Where, r is the radius of the sphere.
Volume of a sphere is
times the surface area.
![V=\dfrac{28}{3}\times A](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B28%7D%7B3%7D%5Ctimes%20A)
![\dfrac{4}{3}\pi r^3=\dfrac{28}{3}\times 4\pi r^2](https://tex.z-dn.net/?f=%5Cdfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3%3D%5Cdfrac%7B28%7D%7B3%7D%5Ctimes%204%5Cpi%20r%5E2)
Multiply both sides by 3.
![4\pi r^3=112\pi r^2](https://tex.z-dn.net/?f=4%5Cpi%20r%5E3%3D112%5Cpi%20r%5E2)
![\dfrac{\pi r^3}{\pi r^2}=\dfrac{112}{4}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cpi%20r%5E3%7D%7B%5Cpi%20r%5E2%7D%3D%5Cdfrac%7B112%7D%7B4%7D)
![r=28](https://tex.z-dn.net/?f=r%3D28)
Using (i), the volume of the sphere is:
Using (ii), the surface area of the sphere is:
![A=4\times \dfrac{22}{7}\times (28)^2](https://tex.z-dn.net/?f=A%3D4%5Ctimes%20%5Cdfrac%7B22%7D%7B7%7D%5Ctimes%20%2828%29%5E2)
![A=9856](https://tex.z-dn.net/?f=A%3D9856)
Therefore, the surface area of the sphere is 9856 sq. units and the volume of the sphere is 91989 cubic units.