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1. If the area of a circle is 81pi square feet, find its circumference. 2.If Tim had lunch at $50.50 and he gave 20% tip, how much did he spend? Help plzzz​

1. If the area of a circle is 81pi square feet, find its circumference. 2.If Tim had lunch at $50.50 and he gave 20% tip, how much did he spend? Help plzzz​
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1. If the area of a circle is 81pi square feet, find its circumference.

2.If Tim had lunch at $50.50 and he gave 20% tip, how much did he spend?

Help plzzz​

asked
User Braggae
by
8.3k points

1 Answer

13 votes

Answer:

the circumference is 18 pi feet.

Explanation:

answered
User NicolasBernier
by
7.4k points
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