The inner circumference of a circular race track Is 440m. If the width of track is 14m, what is the radius of outer circle?
- 70m
- 77m
- 84m
- None of these
Explanation
Circumference of inner circle = 2πr1 = 440m
=> r1 = 440 / (2π) = 70m
The radius of the outer circle will be the radius of the inner circle plus the width of the track.
Radius of outer circle (r2) = r1 + width of the track
r2 = 70m + 14m = 84m
Related MCQs
- Always irrational
- Always an integer
- Always rational
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Cubic root
- Index
- Radical
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Odd
- Positive
- Negative
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Rs. 260
- Rs. 220
- Rs. 240
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
