Mathematics, 29.01.2020 20:59 alyahmarie00

Formula for volume and surface area of a cylinder and explain why

Answers: 3

Show answers

Answers

V = πr² * h (where r is the radius and h the height)
Total SA = Lateral Area + 2Base Area

LA = 2πr * h
BA = πr²

Why?

The cylinder is made by rotating a rectangle for 360°. Two sides make the top and bottom faces, that are circles. The radius is the dimension of the widht/lenght that generated the circles. The other sides form the lateral face (the cylinder has only one lateral face).

Of course to find the lateral area you multiply the radius for 2, to find the diameter of the circle and multiply for π since the rectangle rotates.

For the circles, the base area is just the formula to find the area of a circumference.

You sum the two areas (two times the base area, since it has a circle on the top and one on the bottom) to find the total area.

For the volume, that is the profondity, the capacity of the cylinder, you find the base area (so you know all the capacity) and multiply for the height.

Answer from: Quest

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:

Answer from: Quest

8-2x+3x2=6 and six is your answer

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:00, naynay1997

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

Answers: 1

continue

Mathematics, 21.06.2019 19:00, 4presidents

The distributive property allows you to say that 3(x − 1) = 3x −

Answers: 1

continue

Mathematics, 21.06.2019 20:30, tyrique86

Daryl factors the polynomial p(x)=x3+x2−26x+24 to rewrite it as p(x)=(x+6)(x−4)(x−1). which equations must be true? there may be more than one correct answer. select all correct answers. p(1)=0 p(−4)=0 p(−1)=0 p(6)=0 p(4)=0 p(−6)=0

Answers: 1

continue

Mathematics, 22.06.2019 00:30, oof40

An electrician cuts a 136 foot long piece of cable. one piece is 16 feet less than 3 times the length of the other piece. find the length of each piece

Answers: 1

continue

You know the right answer?

Formula for volume and surface area of a cylinder and explain why...