The diameter of a globe is 10 cm. What is the surface area of the globe?
Options
A
100π cm²
B
314π cm²
C
400π cm²
D
500π cm²
Answer & Analysis
Answer
A
Analysis
Question Analysis
This question involves calculating the surface area of a sphere, using the diameter instead of the radius.
The main focus is on converting diameter to radius and applying the surface area formula.
Key Concept Explanation
The surface area of a sphere is given by:
Since diameter , you must divide the diameter by 2 to find the radius.
Step-by-step Solution
1. Find the radius:
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