Mathematics, 17.09.2019 12:30 indya2
Agroup of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y = ax 2 about the y-axis. if the dish is to have a 18-ft diameter and a maximum depth of 4 ft, find the value of a and the surface of area of the dish.
select the correct answer.
Answers: 1
![SA = \frac{\pi}{6}\frac{r}{h^2}[{(r^2 + 4h^2)}^{\frac{3}{2}} - r^3]](/tpl/images/0236/3713/8ba15.png)
![r=9,h=4 \\SA = \frac{\pi}{6}\frac{9}{4^2}[{(9^2 + 4\times4^2)}^{\frac{3}{2}} - 9^3]\approx 299.54](/tpl/images/0236/3713/1baa2.png)
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Agroup of engineers is building a parabolic satellite dish whose shape will be formed by rotating th...
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