Answer:75. y/x = 75/1 = 75
Step-by-step explanation:
y/x = 75/1 = 75
Step-by-step explanation:
for given cone:
h = 3 ft, r = 3 ft
Let l be the Slant height of cone.
![\therefore \: l = \sqrt{ {h}^{2} + {r}^{2} } \\ = \sqrt{ {3}^{2} + {3}^{2} } \\ = \sqrt{9 + 9} \\ = \sqrt{2 \times 9} \\ \therefore \: l= 3 \sqrt{2} \: ft \\ \\ total \: surface \: area \: of \: cone \\ = \pi \: r(l + r) \\ = 3.14 \times 3(3 \sqrt{2} + 3) \\ = 9.42 \times 3( \sqrt{2} + 1) \\ = 28.26 \times (1.414 + 1) \\ = 28.26 \times 2.414 \\ = 68.21964 \\ \approx \: 68.2 \: {ft}^{2}](https://tex.z-dn.net/?f=%20%5Ctherefore%20%5C%3A%20l%20%3D%20%20%5Csqrt%7B%20%7Bh%7D%5E%7B2%7D%20%20%2B%20%20%7Br%7D%5E%7B2%7D%20%7D%20%20%5C%5C%20%20%3D%20%20%5Csqrt%7B%20%7B3%7D%5E%7B2%7D%20%2B%20%20%7B3%7D%5E%7B2%7D%20%20%7D%20%20%5C%5C%20%20%3D%20%20%5Csqrt%7B9%20%2B%209%7D%20%20%5C%5C%20%20%3D%20%20%5Csqrt%7B2%20%5Ctimes%209%7D%20%20%5C%5C%20%20%20%5Ctherefore%20%5C%3A%20l%3D%203%20%5Csqrt%7B2%7D%20%20%5C%3A%20ft%20%5C%5C%20%20%5C%5C%20total%20%5C%3A%20surface%20%5C%3A%20area%20%5C%3A%20of%20%5C%3A%20cone%20%5C%5C%20%20%3D%20%5Cpi%20%5C%3A%20r%28l%20%2B%20r%29%20%5C%5C%20%20%3D%203.14%20%5Ctimes%203%283%20%5Csqrt%7B2%7D%20%20%2B%203%29%20%5C%5C%20%20%3D%209.42%20%5Ctimes%203%28%20%5Csqrt%7B2%7D%20%20%2B%201%29%20%5C%5C%20%20%3D%2028.26%20%5Ctimes%20%281.414%20%2B%201%29%20%5C%5C%20%20%3D%2028.26%20%5Ctimes%202.414%20%5C%5C%20%20%3D%2068.21964%20%5C%5C%20%20%5Capprox%20%5C%3A%2068.2%20%5C%3A%20%20%7Bft%7D%5E%7B2%7D%20)
Just 9
I'm not sure for the second one but I think 1 ft
the rate given is 345 ft/min
this means within 1 min distance is - 345 ft
we have to convert this speed to ft/h
1 hour is equivalent to 60 minutes
so if 60 minutes equals 1 hour
1 minute is equal to - 1/60 hr
so the distance within 1 minute is - 345 ft
since 1 min = 1/60 hr
distance within 1/60 hour = 345 ft
therefore distance in 1 hour = ![\frac{345}{1/60} = 345 * 60 = 20 700 ft](https://tex.z-dn.net/?f=%20%5Cfrac%7B345%7D%7B1%2F60%7D%20%3D%20345%20%2A%2060%20%3D%2020%20700%20ft%20)
answer is 20 700 ft/h
What are the choices here