Can someone help with this question

133pi

98% sure this is right

circumference in pi form is the radius time 2 and then put pi after it

Step-by-step explanation:

10

Step-by-step explanation:

How many coupons did we each earn just for arriving at Castel Saint'Angelo? This represents the initial value in this situation.

If you look at the graph, before we went to any monuments (when monuments=0), we already had 10 coupons. Thus, the initial value is 10 coupons.