Question

Calculate the slant height for the cone. Round to the heart tenth.

Diameter=8cm
height=9cm

Answers:
A)10.2
B)11.4
C)9.8
D)12.0

Answer 1

Alright so this is relatively simple. First of all the formula for slant height is \[\sqrt{r^2+h^2}\] where "r" represents radius and "h" represents your height. In your case, you have the height so that's not an issue, but you do not have the radius. However, since you have the diameter, you can simply divide it by 2 to get our diameter if you remember.
So 8/2 = 4 ... Now it's just a matter of plugging everything into the formula. So \[\sqrt{4^2+9^2}\] now you'll simplify so you get \[\sqrt{16+64}\] and when you take a square root of that, you'll get 9.8

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Answer 2

**To get our radius**