Acylinder shaped container has a radius of 30 cm and a height of 100 cm. a glass sphere with a radius of 12 cm is placed inside the cylinder shaped container and then the container is completely filled with water.

what is the approximate volume of water contained in the cylinder?

use 3.14 as an approximation for pi.

Your volume formula is not correct.

anyway volume = 1/3 * h * r^2*pi, this liquid volume is constant regardless of the container.
so plug in h and r, v = 1/3 * 6 * 3^2 *pi= 18pi

cylinder is just area of circle * h, so
pi*r^2*h = 18 pi
r^2*h= 18
3*3*h=18
h = 2

basically set the volume equal to each other, and plug in r, and solve for H in cylinder eqn

Ineed with this same question!

so the perpendicular line goes through the given pointyou would get a perpendicular line at some random location

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.