The formula for the surface area of a cone is SA=(pi)(r^2)+(pi)(r)(l)
L is the slant height of the cone.
Because pi is in the answer choices, there is no need to multiply either by pi so the new formula becomes
SA=r^2+(r)(l)
Now you just plug in what you know
Sa=(8^2) + (8)(15)
Sa=64+120
Sa=184(pi)
*dont forget to put the pi back in since you took it out in the beginning of the equation*
Your answer is A.
Hope this helps :)
(4k-9)(2k-2)
First you're going to want to multiply the 4k by the 2k & the -2. Then you're going to want to multiply the -9 by the 2k and the -2.
(4k-9)(2k-2)
4k * 2k = 8k^2
4k * -2 = -8k
-9 * 2k = -18k
-9 * -2 = +18
Since we have like terms (-8k and -18k) put those together.
-8k + -18k = -26k.
Now you're going to want to put all of these together in an equation.
You want to order the numbers from the highest number of exponents (8k^2) to the lowest.
8k^2 - 26k + 18
So the correct answer is 8k^2 - 26k + 18.
Answer:
£32
Step-by-step explanation:
10% of 320 = 32
Calculate a percentage based on 2 numbers.
For example: 32/320 = 10%
447 no remainder hope that’s helps
