-3+1 gives you a negative answer .which in that case equals -2
Answer:
40 and 67
Step-by-step explanation:
I would try using a table. It might work better.
P= 2πr
d= 2ft
P= 2×3.14
P= 6.28
1km= 3,280ft / 2km= 6560ft
6560÷6.28=1044.58 revolutions
Answer:
13-gon
Step-by-step explanation:
The sum of the interior angles of a polygon with n sides is:
S = 180° (n − 2)
If S = 1980°, then:
1980° = 180° (n − 2)
11 = n − 2
n = 13