Answer:
because there isnt any full circles. in order to have a square you need 4 corners .they all only have 1 inside that circle.
Answer:
The diameter decreases at a rate of 0.053 cm/min.
Step-by-step explanation:
Surface area of an snowball
The surface area of an snowball has the following equation:
![S_{a} = \pi d^2](https://tex.z-dn.net/?f=S_%7Ba%7D%20%3D%20%5Cpi%20d%5E2)
In which d is the diameter.
Implicit differentiation:
To solve this question, we differentiate the equation for the surface area implictly, in function of t. So
![\frac{dS_{a}}{dt} = 2d\pi\frac{dd}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7BdS_%7Ba%7D%7D%7Bdt%7D%20%3D%202d%5Cpi%5Cfrac%7Bdd%7D%7Bdt%7D)
Surface area decreases at a rate of 3 cm2/min
This means that ![\frac{dS_{a}}{dt} = -3](https://tex.z-dn.net/?f=%5Cfrac%7BdS_%7Ba%7D%7D%7Bdt%7D%20%3D%20-3)
Tind the rate (in cm/min) at which the diameter decreases when the diameter is 9 cm.
This is
when
. So
![\frac{dS_{a}}{dt} = 2d\pi\frac{dd}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7BdS_%7Ba%7D%7D%7Bdt%7D%20%3D%202d%5Cpi%5Cfrac%7Bdd%7D%7Bdt%7D)
![-3 = 2*9\pi\frac{dd}{dt}](https://tex.z-dn.net/?f=-3%20%3D%202%2A9%5Cpi%5Cfrac%7Bdd%7D%7Bdt%7D)
![\frac{dd}{dt} = -\frac{3}{18\pi}](https://tex.z-dn.net/?f=%5Cfrac%7Bdd%7D%7Bdt%7D%20%3D%20-%5Cfrac%7B3%7D%7B18%5Cpi%7D)
![\frac{dd}{dt} = -0.053](https://tex.z-dn.net/?f=%5Cfrac%7Bdd%7D%7Bdt%7D%20%3D%20-0.053)
The diameter decreases at a rate of 0.053 cm/min.
Answer:one solution
Step-by-step explanation:
$4225 first year
$2746.25 second year
$1785.0625 third year
No because 6 multiplied by 10 is 60 and 6 multiplied by 11 is 66