Answer:
15% tip
Step-by-step explanation:
6/40= 0.15= 15%
Answer:
20
Step-by-step explanation:
Imagine the area is 360 degrees, or

radians.
You would multiply it by (3/8) to get your answer.
Answer:
37.68cm
Step-by-step explanation:
C = 2
r
C = circumference
= the constant pi (3.14)
r = radius of the circle (6cm)
d = diameter of the circle (12cm)
d = 2r
C = 2 · 3.14 · 6
C = 37.68cm