Question #8f1bf

1 Answer
MJ
Feb 9, 2018

See below

Explanation:

The formula for circumference of a circle = #2pir#

Whre #r#= radius of the circle

Therefore, the explanation would be to find the length of the diameter and multiply by #pi#

or,

Multiply twice the radius to #pi#

#2pir# = #2pid/2#
(where #r = d/2#, where d = diameter of circle)

or #2pir# = #cancel2^1pid/cancel2^1# =#pid#

Therefore, #2pir# = #pid# and both explanations are stated above for circumference

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