a horse is tied to a pole with a 28 m long string. The arc where the horses can graze is equal to

Answer:
We know horse can graze all the area that's in limit of it's string .
So string length is treat here as a radius of the circle ,As:

Now As he can graze whole circle made by his string So
Degree measure of an  arc graze by horse =  centre angle of whole circle

Therefore Degree measure of an  arc graze by horse =  360$°$

And
For calculate length of an arc ,We know

$\frac{arc length}{circumference} = \frac{arc measure ( central angle )}{360°}$

arc length = $\frac{360}{360} \left(2\right)\left(\frac{22}{7}\right)\left(28\right)$

arc length = 176 m                                          (Ans)