Answer:
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Step-by-step explanation:
Given,
R = 8 m
H = 15 m
Slant height :






Now, Finding the surface area of the cone:

Plugging the values:



Hope this helps...
Good luck on your assignment...
Well,
First I would like to explain how to convert a mixed number or fraction into a decimal.
1. First if it's a mixed number change it into an improper fraction.
2. After that divide the numerator by the denominator.
3. Your finished as simple as that.
NOW FOR THE ACTUAL ANSWER
well I turned 53 1/3 into an improper fraction which came out to be 160/3. After the division the decimal came to be 53.3333(etc)
I did it in the calculator and everything so I'm almost positive I did this correctly haha)
I hope I helped.
And I really enjoyed answering this since I knew you weren't just looking for an answer but for the reason behind it and how to do it hahah.
Multiply your outside number and your answer to see if you got the number inside the box
(x+6)(x+9) = 0
x+6 = 0 or x+9 = 0
x = -6 x = -9
Answer is A. -6 and -9