C = 2 pi r
but c = 15
15 = 2 pi r
15 = 2 * (22/7) * r
r = (15*7) / 2 / 22
r = 2.386
Answer:
plug in the numbers for radius, and know your formulas. a diameter is 2 times a radius so
Pi or 3.14 times D is the same as 2 times pi times radius.
Answer:
15 friends
Step-by-step explanation:
100-10 = 90 tubes available to share with friends.
90 ÷ 6 = 15
15 friends can pick 6 lip glosses each, leaving none left.