Help please. Do NOT answer if you don't know it. Thank you.

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mattheman1812 mattheman1812

17-02-2017
Mathematics

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Help please. Do NOT answer if you don't know it. Thank you.

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apologiabiology apologiabiology · Answer 1 · 2017-02-17T17:35:45-05:00

apologiabiology apologiabiology

17-02-2017

a=pir^2

1.first one is 3.14 times 3.53.5=38.46 or about 38.5
2nd option

2.
c=2pir
c=23.53.14=21.98=22.0
4th opttion

3.
d/2=r
12/2=6
a=pir^2
a=3.146^2=113.04, or about 113.0
1st opiton

4.
85+1/23.144^2=65.12=65.1, so
3rd option

5.
22=4
4^2-3.14*2^2=3.44 or abot 3.4
3rd option

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