College Math Placement Practice Test

Question: 1 / 400

What is the area of a trapezoid with bases of 4 and 8, and a height of 5?

To calculate the area of a trapezoid, you can use the formula:

\text{Area} = \frac{1}{2} \times (b_1 + b_2) \times h

where $ b_1 $ and $ b_2 $ are the lengths of the two bases, and $ h $ is the height.

In this case, the lengths of the bases are 4 and 8, and the height is 5. Plugging these values into the formula gives:

\text{Area} = \frac{1}{2} \times (4 + 8) \times 5

First, calculate the sum of the bases:

4 + 8 = 12

Next, multiply this sum by the height, which is 5:

12 \times 5 = 60

Now, take half of that product:

\text{Area} = \frac{1}{2} \times 60 = 30

Thus, the area of the trapezoid is 30. This confirms that the correct answer is indeed the one provided. The calculations

Report this question

Get the latest from Examzify