Step-by-step explanation:
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Answer:
The Radius of the base, r, and the altitude h
Step-by-step explanation:
Surface area of a right cone

R= Radius
H=Radius
You can't solve this unless you have numbers to substitute or another equation.
Answer:
C
Step-by-step explanation:
B can immediately be eliminated because it has an area of 14.
A and C have an area of 10.
So add the sides.
C:
4 + 4 + 1 + 1 + 2 + 2 + 1 + 3
= 18
A: 3 + 3 + 2 + 2 + 1 + 1 + 1 + 1 =
10 + 4 =
14