Calculate the area of a trapezoid having bases of 11 in and 21 in, and a height of 6 in?
Options
A
48 in²
B
64 in²
C
72 in²
D
96 in²
Answer & Analysis
Answer
D
Analysis
Question Analysis
The main focus is on applying the formula for the area of a trapezoid to calculate the area using the given lengths of the bases and the height.
Key Concept Explanation
The area of a trapezoid is calculated by the formula , where and are the lengths of the two bases and is the height. This formula is derived from the concept of combining two congruent trapezoids to form a parallelogram, and then finding the area of the trapezoid as half of that parallelogram's area.
Step - by - Step Solution
1. Identify the values of the bases and height:
Here, , , and .
2. Apply the formula:
First, find the sum of the bases: .
Then, multiply the sum of the bases by the height:
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