The length of the band is 50mm any body with idea on how to solve it?

88mm Circumference of a circle =2pi R×4 pencils

66.5mm

The actual length is 28+7pi(49.9911484)

Martinez19:
The actual length is 28+7pi(49.9911484)

correct!

timonski:

correct!

I am bad like that

Martinez19:
I am bad like that

hehe. You are studying math?

timonski:

hehe. You are studying math?

I like mathematics but I am not studying it now.

Martinez19:
I like mathematics but I am not studying it now.

mechanical?

timonski:

mechanical?

I am a medical student but I study maths when I am not studying medicine.

lomprico:
66.5mm

am sure the answer is 50mm got this from new general mathematics

Holyfire1:
88mm
Circumference of a circle =2pi R×4 pencils

wrong



got that too

This is almost correct but i think 1/4 * 2πr should be more appropriate since we are dealing with perimeter not area

seunwen2:



am sure the answer is 50mm got this from new general mathematics

Yeah u r right! Have seen my mistake, I used area of an arc instead of length of an arc formula.

seunwen2:



am sure the answer is 50mm got this from new general mathematics

check my answer, it is correct. 50mm is not the exact. It is approximation. But you could say 50mm. New general mathematics uses 22/7 to approximate the value of pi.

Martinez19:
check my answer, it is correct. 50mm is not the exact. It is approximation. But you could say 50mm. New general mathematics uses 22/7 to approximate the value of pi.

correct