how to find surface area and volume of a cylinder and a rectangular prism ?

Question

how do you find the surface area and volume of a rectangular prism and a cylinder ? I have this homework and I'm not sure how to do it ..

Answer 1

Assuming it is a right circular cylinder:

Let

r = radius
h = height

Volume = πr²h
Surface area including the two ends = 2πrh + 2πr²

Rectangular prism

Let

L = length
W = width
H = height

Volume = LWH
Surface area = 2LW + 2LH + 2WH

Answer 2

the surface area of a right angle circular cylinder is

2 x pie x r x h + 2 x pie x r square
volume is

pie x r squared x hieght

volume of prism

length x hieght x width

surface area 2 times the area of opposing sides. this means find the area of the front, top and left side. then multiply each by 2 and add together.

Answer 3

the surface area of the rectangular prism equals the sum of the area of each face of the prism. the volume equals the area of the base times it's height.

too tired to do the cylindar lol

Answer 4

In all of those circumstances, the quantity is the element of the backside circumstances the top. the backside of a cylinder is a circle, so its section is ? r ². So the quantity may be ? r ² h. For a triangular prism, you will possibly desire to locate the element of the triangular base then multiply that by technique of the top. the element of a rectangle is length circumstances width, so the quantity of an oblong prism is length circumstances width circumstances the top. to locate the exterior section, upload up each and all of the aspects. the exterior element of a cylinder is the element of the right and backside (2 circles) plus the area section (it fairly is the circumference of the circle circumstances the top). So it is two(? r ² h) + (2? r)h, or 2?r(r+h). For prisms, word that each and all of the area faces is a rectangle whose top is h and whose width fits the area of the backside. So upload up the aspects, plus the right and backside.