2006-08-08 21:53:40 · 7 answers · asked by dyer_trisha 1 in Education & Reference ➔ Homework Help
D=C/pi
2006-08-08 21:57:09 · answer #1 · answered by druid 7 · 1⤊ 0⤋
This will date me!
When I was at school my maths teacher taught us this rhyme:
Said Tweedle Dum to Tweedle Dee
Once round the circle is Pi times D
But if the area is declared,
Think of the formula Pi R squared.
Therefore, using inverse operations, if Pi = 3.142 divide this by the circumference to find the diameter.
2006-08-10 05:31:08 · answer #2 · answered by Purple 8 4 · 0⤊ 0⤋
the circumference is found by multiplying the diameter of a circle by Pi ( A no. approximately equal to 3.142)
So to find a diameter if you have the circumference, just divide by Pi
(To find an approximate answer in your head divide by 3)
2006-08-08 23:35:03 · answer #3 · answered by beee_very_careful 1 · 0⤊ 0⤋
Diameter equals the circumference divided by Pi (3.141)
2006-08-08 22:03:58 · answer #4 · answered by scotsman 5 · 0⤊ 0⤋
Divide the diameter by pi (the value 3.14159 should be close enough for most purposes).
2006-08-08 21:59:51 · answer #5 · answered by BryanIRL 2 · 0⤊ 0⤋
The Circumference is found by C=Ïd, so rearrange the formula to put d on its own by dividing both sides by Ï,
C/Ï=(Ïd)/Ï
d=C/Ï
2006-08-08 22:02:57 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Divide it by pi
2006-08-08 21:57:44 · answer #7 · answered by Anonymous · 0⤊ 0⤋