A cone has a radius of 3 cm and a height of 4 cm. What is the surface area of the cone in terms of π?
Options
A
15π cm²
B
24π cm²
C
28π cm²
D
36π cm²
Answer & Analysis
Answer
B
Analysis
Question Analysis
This question involves calculating the total surface area of a cone, using the radius and vertical height.
And you must first find the slant height using the Pythagorean theorem.
Key Concept Explanation
Slant height . Then use SA = πr² + πrl.
Step-by-step explanation
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