2013 · Q35
As shown in the above diagram, a person starts from the centre O of a circular path AB walks along the line indicated by arrows and returns to the same point. If the radius OA = OB = 100 m, what is the total distance walked to the nearest metres?
general-mental-abilityquantitative-aptitude
- A703
- B723
- C743
- D823
Explanation
The walk covers OA (100 m) plus the major arc from A to B plus BO (100 m), which sums to about 723 m.