the circumference of the aerial roots of a tree is 390ft. find the diameter of the roots to the nearest 10?

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2007-02-05 11:01:29 · 3 answers · asked by kp 2 in Science & Mathematics ➔ Mathematics

C=Pi(D)
C/Pi = D
390/Pi = D

124.2 = D

2007-02-05 11:12:19 · answer #1 · answered by Sparky 4 · 0⤊ 0⤋

Diameter = circumference/Ï

Use your calculator. It should be a bit over 120 ft, I think.

2007-02-05 19:10:49 · answer #2 · answered by Hy 7 · 0⤊ 0⤋

C = pi*D
D = C/pi = 390ft/3.14159 = 124.1

2007-02-05 19:12:34 · answer #3 · answered by kellenraid 6 · 0⤊ 0⤋