Answer:

Step-by-step explanation:
The formula to calculate the surface area of a sphere is the following:

Where A is the area of the sphere and r is the radius of the sphere.
In this case we know that the diameter d of the sphere is:

The diameter is:
.
Thus

Then the surface area of the sphere is:

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Answer:
Step-by-step explanation:We can show this proof by representing the given information in a diagram
Answer:o don’t know
Step-by-step explanation:just give up , nah let me drip never give up and try harde
Answer:
2.5
Step-by-step explanation:
The value of (4-1/4) divided by (2-1/2) is 2.5
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