Question

A race track is made up of a rectangle shape 750 m by 500 m semi circles at each end. Marisol drives the track once at average speed of 140 kmh. Calculate the distance marisol travels

Answer 1

Answer:

$d=3071m$

Step-by-step explanation:

From the question we are told that:

Dimension Of rectangle

Length $l=750m$

Breath $b=500m$

Velocity $v=140kmh$

Generally the equation for distance travel by Marsol once round the Circle is is mathematically given by

 $d=2(l)+2(arc\ of\ the\ semi\ circle)$

 $d=2(l)+2( 2\pi r (\frac{\theta}{360}))$

Where

 $r=\frac{b}{2}$

 $r=\frac{500}{2}=>250$

And

 $\theta=180$

Therefore

 $d=2(750)+2( 2\pi 250 (\frac{180}{360}))$

 $d=3071m$