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gtnhenbr [62]
2 years ago
10

Please help i need to write out my work to so please tell me how to show it

Mathematics
2 answers:
myrzilka [38]2 years ago
7 0
A) C=3.14 x radius x 2 or C= 3.14 x diameter
C= 3.14 x 7 ( because diameter is already given)
C = 21.98
B) 3.14 x 9 x 2 ( r is given )
C= 28.26 x 2
C= 56.52
C) 3.14 x 5 x 2 ( r is given )
C= 31.4
Anarel [89]2 years ago
3 0
For the first one write 9 divided by 2 gives your your radius an it’s 3.5. the formula is 2 x 3.14 x radius and that gives you 21.98.

the 2nd one is 2 x 3.14 x 9 = 56.52

the 3rd is 2 x 3.14 x 5= 31.4

formula is always 2 x 3.14 (or pie) x radius

to get your radius from your diameter you do your diameter divided by 2
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