Concept explainers
To calculate the perimeter and area of the trapezoid
To Graph :
To plot the trapezoid in the graph and find the area and perimeter of the trapezoid
Explanation of Solution
Given information :
Coordinates given are A (-2,1), B (-5,-3), C (5,-3) and D (2,1)
Graph :
Interpretation :
Distance(
Solving it for
Distance
On calculating above equation
Distance
On calculating above equation
Distance
On calculating above equation
Now calculating perimeter of the trapezoid
Perimeter
Substituting the values
Perimeter = 5 + 10 + 5 + 4 = 24 unit
From the above graph, height of the trapezoid is AE
AE = 4 units
Using the below formula to calculate area of the trapezoid
Where a is AD , b is BC and h is height of the trapezoid shown in graph
Substituting the values of a, b and h in the above formula
Chapter 10 Solutions
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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