The circumference of a circle is a 12.1mm. Find the length of the radius. Give your answer rounded to 1 DP.

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Jmatthias asked Jul 6, 2023

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The circumference of a circle is a 12.1mm. Find the length of the radius. Give your answer rounded to 1 DP.

Mathematics
high-school

Jmatthias asked Jul 6, 2023

by Jmatthias

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2 Answers

12 votes

Answer:

1.9

Explanation:

r=C/2π

r-12.1/2π=1.9257...

Mario Trucco answered Jul 7, 2023

by Mario Trucco

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7 votes

Answer:

1.9 mm

Explanation:

Circumference of circle = 2πr

2πr = 12.1 mm

$\sf 2* (22)/(7)*r= 12.1\\\\$

$\sf r = (12.1*7)/(2*22)\\\\$

= 1.925

$\sf \boxed{radius =1.9 \ mm }$

Yvan answered Jul 11, 2023

by Yvan

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