Answer:
![B_2=4\pi r^2](https://tex.z-dn.net/?f=B_2%3D4%5Cpi%20r%5E2)
see the explanation
Step-by-step explanation:
we know that
The area of the base of a cylinder is given by the formula
![B=\pi r^{2}](https://tex.z-dn.net/?f=B%3D%5Cpi%20r%5E%7B2%7D)
where
r is the radius of the circular base
If the radius is doubled
then
![r=2r](https://tex.z-dn.net/?f=r%3D2r)
The new base area is
![B_2=\pi (2r)^{2}](https://tex.z-dn.net/?f=B_2%3D%5Cpi%20%282r%29%5E%7B2%7D)
![B_2=4\pi r^2](https://tex.z-dn.net/?f=B_2%3D4%5Cpi%20r%5E2)
so
![B_2=4B](https://tex.z-dn.net/?f=B_2%3D4B)
therefore
The new area of the base is 4 times the area of the original base
Answer:
answer 16
Step-by-step explanation:
because if there are 8 dogs and they each of them have 2 legs then 2X8=16 \
sheeeeeeeeeeeeeeeeeeeeeeeeeesh this math busssssiin
2.8 miles.
My Work/Reasoning:
First we find the rate. 7/60 mpm (miles per minutes)
Then we multiply that by 24. 7/60 * 24
Finally, we solve the equation and learn that Chang would run 2.8 miles in 24 minutes.
GE = 1/2 BG
GE = 1/2(24)
GE = 12
answer
12 mm