Asked by Sliverstream
Find the circumference of the circle. Use 3.14 for π. Round to the nearest unit.
(Show picture of circle with a diameter, with 21cm at one side)
A) 24cm
B) 66CM
C) 125cm
D) 69cm
Please help me understand, that means don't tell me the answer without explaining it!
Thanks
(Show picture of circle with a diameter, with 21cm at one side)
A) 24cm
B) 66CM
C) 125cm
D) 69cm
Please help me understand, that means don't tell me the answer without explaining it!
Thanks
Answers
Answered by
Ms. Sue
The circumference is the distance around a circle.
To find the circumference, use this formula.
C = pi * diameter
To find the circumference, use this formula.
C = pi * diameter
Answered by
oobleck
just remember your formula for the circumference of a circle of diameter d:
C = πd
π is defined as the ratio of the circumference to the diameter: π = C/d
C = πd
π is defined as the ratio of the circumference to the diameter: π = C/d
Answered by
Sliverstream
Sooo Sorry if I am getting this wrong,
is it 21 * 3.14?
Answered by
Ms. Sue
Yes; 21 * 3.14
Answered by
Sliverstream
Which is 65.94..... this rounded to the nearest unit will be 69 cm or 66 cm. I think it is 66 cm. Right?
Answered by
Ms. Sue
Yes, 66 cm.
Answered by
Sliverstream
Thank you for helping me understand it, Ms. Sue, and Oobleck!
Answered by
Ms. Sue
You are welcome.
Answered by
MMMMSPRITE
Thanks mrs.sue I understand now
Answered by
Roo
Ur awesome mrs sue!
Answered by
Abby T^T
thx ms. sue and oobleck!!
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