What is the volume of a sphere with a diameter of 2 1/2 inches

The formula for volume of a sphere is:

where r is the radius

Since we are not given the radius, we can just cut the diameter in half, which is the equivalent.

We should end up getting a radius of 5/4

We now need to substitude 1.25 for r
 

 

We can change this to 125/64 * 4/3 * π

Simplify further to get 125/16 * 1/3 * π (cross out the 4's)

Multiply and your final volume should be 125/48π in³

x = 60

y = 120

Step-by-step explanation:

The triangle is equilateral, meaning all sides and angles are congruent. A triangle has a total of 180 degrees. 180/3 = 60, so that is x. To find y, do 180 - 60, which is 120. Mark brainliest if this helped :)