Just add 8+8 12+12 then get your answer and multiply that by each number in the answer box until you get 192
All needs a formula
V = pi r^2 h/3
radius comes 1.8
and the answer comes 1.8. so
C. 7.4
21 the number is 21 the number of 1 is 21
Answer:
C. 3/2 Radians
Step-by-step explanation:
As we know, a radian is defined as "the angle enclosed by an arc equal to the radius", or some variant of such.
This means 1 radian in this circle would have an arc length of 8cm.
Simple proportions should get you an answer:
![\frac{1 \: radians}{8cm} = \frac{x \: radians}{12cm} \\ 8x = 12 \\ x = \frac{12}{8} \\ x = \frac{3}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%20%5C%3A%20radians%7D%7B8cm%7D%20%20%3D%20%20%20%5Cfrac%7Bx%20%5C%3A%20radians%7D%7B12cm%7D%20%5C%5C%208x%20%3D%2012%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B12%7D%7B8%7D%20%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B3%7D%7B2%7D%20)