Pre-Algebra Examples

Find the Surface Area cylinder (7yd)(2yd)
Step 1
The surface area of a cylinder is equal to the sum of the areas of the bases each having an area of , plus the area of the side. The area of the side is equal to the area of a rectangle with length (the circumference of the base) times the height.
Step 2
Substitute the values of the radius and height into the formula. Pi is approximately equal to .
Step 3
Simplify each term.
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Step 3.1
Multiply by by adding the exponents.
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Step 3.1.1
Move .
Step 3.1.2
Multiply by .
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Step 3.1.2.1
Raise to the power of .
Step 3.1.2.2
Use the power rule to combine exponents.
Step 3.1.3
Add and .
Step 3.2
Raise to the power of .
Step 3.3
Multiply by .
Step 3.4
Multiply by .
Step 4
Add and .