Windmills are used to generate electricity. Suppose a particular windmill has a blade that is 140 ft long from the center of its mounting. (a) When the blade makes one complete rotation, how far (in ft) does the tip of the blade travel? (b) What is the surface area (in acres) that the rotating blades cover? (Use the Metric and U.S. ConversiC table to find the conversion factor(s).
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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Windmills are used to generate electricity. Suppose a particular windmill has a blade that is
140 ft long from the center of its mounting.
(a)
When the blade makes one complete rotation, how far (in ft) does the tip of the blade travel?
(b)
What is the surface area (in acres) that the rotating blades cover? (Use the Metric and U.S. Conversion
table to find the conversion factor(s).
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