What is the diameter of the circle that has a circumference of 15cm?

2 Answers
Apr 10, 2018

#"diameter "~~4.78" cm to 2 dec. places"#

Explanation:

#"using the formula for circumference (C)"#

#•color(white)(x)C=pidlarrcolor(blue)"d is the diameter"#

#rArrd=C/pi=15/pi~~7.78" cm"#

Apr 10, 2018

about 4,78

Explanation:

the equation for circumference is:
#D*pi=C#
(D=diameter, C=circumference)
To get the diameter we need to invert the equation:
#C/pi=D#
If we put in all the numbers now we get that:
#15/3,14=4,777070...#