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What are the formulas for finding volume and surface area?

 Mar 10, 2015

Best Answer 

 #1
avatar+18 
+9

Depends on shape

VOLUME

cube = a 3 

rectangular prism = a b c 

irregular prism = b h 

cylinder = b h = pi r 2 h 

pyramid = (1/3) b h 

cone = (1/3) b h = 1/3 pi r 2 h 

sphere = (4/3) pi r 3 

ellipsoid = (4/3) pi r1 r2 r3 

AND SURFACE AREA

Surface Area of a Cube = 6 a 2

 (a is the length of the side of each edge of the cube)

In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.

 Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac 

Surface Area of Any Prism

  (b is the shape of the ends)

Surface Area = Lateral area + Area of two ends

(Lateral area) = (perimeter of shape b) * L

Surface Area = (perimeter of shape b) * L+ 2*(Area of shape b)

 Surface Area of a Sphere = 4 pi r 2 

 Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h

 Mar 10, 2015
 #1
avatar+18 
+9
Best Answer

Depends on shape

VOLUME

cube = a 3 

rectangular prism = a b c 

irregular prism = b h 

cylinder = b h = pi r 2 h 

pyramid = (1/3) b h 

cone = (1/3) b h = 1/3 pi r 2 h 

sphere = (4/3) pi r 3 

ellipsoid = (4/3) pi r1 r2 r3 

AND SURFACE AREA

Surface Area of a Cube = 6 a 2

 (a is the length of the side of each edge of the cube)

In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.

 Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac 

Surface Area of Any Prism

  (b is the shape of the ends)

Surface Area = Lateral area + Area of two ends

(Lateral area) = (perimeter of shape b) * L

Surface Area = (perimeter of shape b) * L+ 2*(Area of shape b)

 Surface Area of a Sphere = 4 pi r 2 

 Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h

urstupid Mar 10, 2015
 #2
avatar+417 
+5

Holy p**p. I seriously just.. wow

 Mar 10, 2015

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