Concept explainers
To find : the area of plane region.
Answer to Problem 5QR
The area of plane region is
Explanation of Solution
Given information : The area of an equilateral triangle with sides of length
Calculation :
In an equilateral triangle, the height of the triangle bisects one of the sides.
So, by the Pythagoras theorem, the height of the triangle is
Since, the area of a triangle is half the product of the base and the height.
The area is
Chapter 8 Solutions
Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy)
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