Things You'll Need:
- Drawing Books
- Calculators
- Drafting Compasses
- Erasers
- Folders
- Graph Papers
- Notebooks
- Rulers
- Calculators
- Notebooks
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Step 1
Find the surface area of a cube by squaring the length of one side and multiplying the result by 6. Example: The surface area of a cube with side length 3 is 6 x (3 x 3) = 54.
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Step 2
Calculate the area of each side and find the sum of the areas of all sides to find the surface area of a prism. Example: the surface area of a rectangular prism of height 2, width 3, and length 5 is (2 x 3) + (2 x 3) + (2 x 5) + (2 x 5) + (3 x 5) + (3 x 5) = 62.
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Step 3
Multiply the square of the radius by pi to find the surface area of a sphere. Then multiply the result by 4. Example: The surface area of a sphere of radius 3 is 4 x pi x 3 x 3 = 113.
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Step 1
Find the surface area of a cylinder by first multiplying the radius by 2 times pi.
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Step 2
Multiply the product by the height of the cylinder.
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Step 3
Multiply the square of the radius by 2 times pi.
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Step 4
Find the sum of the results of steps 5 and 6. Example: The surface area of a cylinder of radius 4 and height 5 is (2 x pi x 4 x 5) + (2 x pi x 4 x 4) = 226.
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Step 5
Determine the surface area of a cone by multiplying the radius of the base by the slant height of the cone.
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Step 6
Multiply the result by pi.
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Step 7
Multiply the square of the radius of the base by pi.
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Step 8
Find the sum of the results of steps 9 and 10. Example: The surface area of a cone with base radius 2 and slant height 4 is (pi x 2 x 4) + (pi x 2 x 2) = 38.







Comments
sara said
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Sincerely,
a friendly customer :)
Anonymous said
on 1/9/2008 1. Do 2 x pi (3.14) x radius x height. 2. Multiply What ever your radius is by itself. Ex. 3x3, or 12 x 12.
3.Do 2 x pi x radius doubled as shown above.
Radius is 5 and height is 13.
Example: 2 x 3.14 x 5 x 13 = 408.2
2 x 3.14 x 5 x 5 = 157
Then 157 plus 408.2 = 565.2 < Surface Area.
Anonymous said
on 11/22/2005 Step 1: Find the area of the top and bottom of the cylinder = 2(Pi x r x r).
Step 2: Cut open the cylinder lengthwise, so that the circumference becomes the length of one side = Pi x d = Pi x r x r, multiply this by the length of the cylinder to get the area of that rectangle.
Step 3: Add the answers to steps 1 and 2 together.
Anonymous said
on 11/22/2005 For cylinders- step 1:You do pie (say3.14)times raidus times 2.
step 2: You do pie (3.14) times the diameter times the height.
step 3: you add the 2 answers you got to get the final answer.