Trapezoid Problem: Calculate DC Length Given Area=80 and Height=8

Given the trapeze in front of you:

AAABBBCCCDDD9808

Given h=8, AB=9.

Since the area of the trapezoid ABCD is equal to 80.

Find the length of the side DC.

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find DC
00:03 We will use the formula for calculating the area of a trapezoid
00:07 (Sum of bases(AB+DC) multiplied by height(H)) divided by 2
00:14 We'll substitute appropriate values and solve for DC
00:27 Divide 8 by 2
00:31 Isolate DC
00:45 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Given the trapeze in front of you:

AAABBBCCCDDD9808

Given h=8, AB=9.

Since the area of the trapezoid ABCD is equal to 80.

Find the length of the side DC.

3

Final Answer

10

Practice Quiz

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Calculate the area of the trapezoid.

555141414666

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