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 :)
Answer:
B.
Step-by-step explanation:
Took the test :}
Answer:
19.2
Step-by-step explanation:
khan
Answer:
y=3+2x/3
Step-by-step explanation:
−
3
y=−
9
−
2x
Divide each term by -3 and simplify.
Answer:
The width of rectangle is 
or 
Step-by-step explanation:
we know that
The perimeter of rectangle is equal to
where
L is the length of rectangle
W is the width of rectangle
we have
substitute
solve for x
simplify
Find the width of rectangle
substitute the value of x
Convert to mixed number
