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Pls can you guys explain me first two questions it will be a big help thank you​

Answer»

Answer:

Surface AREA of sphere of radius means USE

SA = 4πr²

Surface area if a sphere with diameter means use

SA = 4πd²/4  ⇒  SA = πd²

Now that you know the FORMULAS, use them in the problem and get the answer...

HOPE it helps...



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