SOLUTION: A glass sphere weighs 0.25 pounds. How much does another such sphere weigh if its diameter is eight times as large? i really don't understand this at all! A glass weighs 0.4

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Question 597908: A glass sphere weighs 0.25 pounds. How much does another such sphere weigh if its diameter is eight times as large?
i really don't understand this at all!
A glass weighs 0.4 pounds. How much does another such sphere weigh if its circumference is six times as large?
a) 86.4 b) 2.4 c) 93.7 d) 14.4
Answer by maverik(1) About Me  (Show Source):
You can put this solution on YOUR website!
since the weigh is 0.4 and is asking 6 times the weigh .4*6=2.4 answer is B