asked 127k views
3 votes
Francesca runs around the inner edge of this running track at a constant speed of 4 m/s. The track is made

from two straight sections and two semicircular sections.
Work out how many seconds it takes Francesca to run exactly once around the track.
If your answer is a decimal, give it to 1 d.p.
19 m radius
130 m width
130 m

1 Answer

2 votes

Answer:

(2(130) + 2π(19))/4 = (260 + 38π) m ÷ 4 m/s

= about 94.8 seconds

answered
User Presley
by
7.2k points
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