I and my Brother are having a debate about this. If someone was born in 2008 and another is born in 2011, How many years apart are they?

1.) 3 Years
2.) 2.5 Years

Which ratio is equivalent to 10: 85

Find the percent error of the measurement 4 cm

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?