What is the volume and total surface area of a sphere with the radius 2.25in?

Step-by-step explanation:

The formula for determining the volume of a sphere is expressed as

Volume = (4/3)πr³

Where

r represents the radius of the sphere.

π is a constant whose value is 3.14

From the information given,

radius = 2.25 inches

Volume = 4/3 × 3.14 × 2.25³

Volume = 47.69 inches³

The formula for determining the total surface area of a sphere is expressed as

Total surface area = 4πr²

Therefore

Total surface area = 4 × 3.14 × 2.25²

= 63.9 inches²

i got 142 as my answer

step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

ask for details followreport by buttfacelily 2 minutes ago

answers

rauschg

rauschg · hand

know the answer? add it here!

step-by-step explanation: