I think it's incorrect, because using an umbrella has nothing to do with plants growing. Something like that. What are my choices?
I really think it's 4 or B
Answer:
1. 13 times
2. 1170 sec = 19 min 50 sec
Step-by-step explanation:
1. 3.1 times 4 quoters = 13 times
90 sec
<u>x 13 times</u>
270
<u> 900 </u>
1170 sec = 19 min 50 sec
The smallest degree of rotation is called the angle of rotation. This can be calculated by dividing the angle of full rotation by the number of sides of a regular polygon. Since a full rotation is 360 degrees, we divide 360 by 24.
Thus, the smallest rotation needed to map the polygon back to itself is 15 degrees.