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Popular Word Problems >

The diameter of a circle is 20 cm. Find its circumference in terms of pipi.

Solution

T h e d iam e t er o f a c i rc l e i s 20 c m . F in d i t s c i rc u m f ere n ce in t er m s o f p iπ .

Solution

c i rc u m f ere n ce : 20 π c m

+1

Decimal

62.83185 \dots

Solution steps

Given:

d iam e t er : 20 c m

Circle circumference given

d = 20 : C = 20 π

c i rc u m f ere n ce : 20 π c m

Popular Examples

The circumference of a circular field is 188.4 yards. What is the diameter of the field? Use 3.14 for pi and do not round your answer Find a number such that 1/4 of the number is 50 less than 2/3 of the number.a coat has been reduced to 51.00 in a 15% off sale what was the original price of the coat The circumference of a circle is 5pi m. What is the area, in square meters? Express your answer in terms of pipi.John is four times as old as Martha. Five years ago the sum of their ages was50. How old are they now?