You have to answer 3 essay questions for an exam. There are 6 essays to choose from. How many different groups of 3 essays could
1 answer:
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Answer:
Step-by-step explanation:
Given
-- two rectangles
Required
Determine the perimeter of one of the rectangles
First, calculate the area (A) of 1 rectangle
Express as difference of two squares
Area is calculated as:
So, by comparison:
The perimeter is:
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