Answer:
![94.2m^2](https://tex.z-dn.net/?f=94.2m%5E2)
Step-by-step explanation:
The formula for SA of a cone is...
![\pi (r)(h)+\pi (r)^2](https://tex.z-dn.net/?f=%5Cpi%20%28r%29%28h%29%2B%5Cpi%20%28r%29%5E2)
Fill in what you have
![\pi (3)(7)+\pi (3)^2](https://tex.z-dn.net/?f=%5Cpi%20%283%29%287%29%2B%5Cpi%20%283%29%5E2)
Pi is 3.14 for our purposes
![\pi (3)(7)+\pi (3)^2\\3.14(3)(7)+3.14(3)^2](https://tex.z-dn.net/?f=%5Cpi%20%283%29%287%29%2B%5Cpi%20%283%29%5E2%5C%5C3.14%283%29%287%29%2B3.14%283%29%5E2)
Then solve
![21(3.14)+9(3.14)\\\\94.2m^2](https://tex.z-dn.net/?f=21%283.14%29%2B9%283.14%29%5C%5C%5C%5C94.2m%5E2)
4 angles all angle are 90 degress so 90 plus 90 plus 90 plus 90 =360.
The domain is A. All real numbers.
Given that Megan's tax rates were as follows:
<span>No tax one the first £11000 of earnings
</span><span>Earnings in excess of £11000 and up to £43000 taxed at a rate of 20%
</span><span>Earning in excess of 43000 and up to £150000 taxed at a rate of 40%
</span>Earnings over £150000 taxed at a rate of 45%
If Megan earned £158900 before tax last year, the amount of tax she paid in total is given as follows:
First <span>£11000 = </span><span>£0 tax
</span>Balance after first <span>£11000 = </span><span>£158900 - </span><span>£11000 = </span><span>£147900
</span>
Next (<span>£43000 - </span><span>£11000 = </span><span>£32000) = 20% of </span><span>£32000 = 0.2 x </span><span>£32000 = </span>£6400 tax
Balance after next <span>£32000 = </span><span>£147900 - </span><span>£32000 = </span><span><span>£115000</span> </span>
Next (<span>£150000 - </span><span>£43000 = </span><span>£107000) = 40% of </span><span>£107000 = 0.4 x </span><span>£107000 = </span><span>£42800 tax</span>
Balance after next <span>£107000 = </span><span>£115000 - </span><span>£107000 = </span><span>£8000</span>
Remaiming <span>£8000 = 45% of </span><span>£8000 = 0.45 x </span><span>£8000 = </span><span>£3600 tax</span>
Total tax = <span>£6400 + </span><span>£42800 + </span><span>£3600 = </span><span>£52800
Therefore, she paid a total of </span><span>£52800 in tax last year.</span>