Math, asked by aryanvrma2004, 1 year ago

find the diameter of a circle whose circumference is 66 cm

Answers

Answered by gaurav2013c

Circumference of circle = 66 cm.

=> 2* pi *r = 66

=> 2* 22 *r/7 = 66

=> r = 66*7/22*2

=> r = 3*7/2

=> r = 21/2

Diameter = 21 cm

Answered by chandnirawat

Hii !!!
it is ur answer
circumference= 2pie r
2×22/7×r=66
r= 66×7/2×22
r=3×7/2
r=3×3•5
r=10•5cm
diameter=2×radius
d= 2×10•5
d=21cm

chandnirawat: most welcome

aryanvrma2004: yeah It helped me

chandnirawat: any more help from me

aryanvrma2004: wait

aryanvrma2004: can u write all the formulas for finding radius diameter etc in circle

aryanvrma2004: I will be thankful for it

chandnirawat: If area is given so we can find radius by this formula 2*pie*r

aryanvrma2004: ok

chandnirawat: tjis is also in the case where circumference is given

chandnirawat: diameter =2×radius

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