What is the circumference of a circle if the diameter is 1.6?

1 Answer
Sep 9, 2015

Answer:

Circumference #= 5.0#

Explanation:

Formula for circumference of circle is #pid#
#color(white)("XXXX")#where #d# is the diameter, and
#color(white)("XXXX")pi# (approximately #3.14159#) is a standard constant.

With a diameter of #1.6#
#color(white)("XXXX")#circumference #= pi*1.6#

#color(white)("XXXXXXXXXXXX")~~3.14159*1.6#

#color(white)("XXXXXXXXXXXX")~~ 5.02654#

Since the diameter is only given to 2 places of accuracy, the computed average should be rounded to 2 places as well:
#color(white)("XXXX")#circumference #= 5.0#