We use a conjecture that says that the perpendicular bisector of a chord in a circle passes through the center of the circle.
The distances of the two bisectors are the same so the chord lengths are the same.
b = half of 22.5 = 11.25
The answer to your question is 11.25.
<span>Looking at the choices closely, you can find one relation or sameness with the given situation m*8=24. Isolating “m” gives you a new equation m=24/8 which is related to equation m=25/8. It has same m value on the left of the equation and it contains 2 whole numbers and arithmetic operation (/) on the right of the equation.</span>
The 24th
Bumper sticker: 6, 12, 18, 24
Key Chain: 12, 24, 36
24 is on both lines
If the radiation level is 100%, it would take 2.4 days to take the radiation level to 50%. However, the situation implies that the radiation level is 25% only, so we need to take 25% from 2.4 days to know the timeframe for a room to be emptied from the radioactive gas. 2.4 days multiplied by 0.25 will give a result of 0.6 day - the timeframe needed to empty the room out of the radioactive gas.
