Right Triangle Side Length: Find BC When Area = 32 and Height = 8

ABC is a right triangle with an area of 32.

Calculate the length of side BC.

323232888AAABBBCCC

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine the value of BC
00:02 Apply the formula to calculating the triangle's area
00:06 (Height(AB) x base(BC)) divided by 2
00:12 Substitute in the relevant values and proceed to calculate to determine BC
00:20 Divide 8 by 2 to obtain 4
00:24 Isolate BC
00:30 This is the solution

Step-by-step written solution

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1

Understand the problem

ABC is a right triangle with an area of 32.

Calculate the length of side BC.

323232888AAABBBCCC

2

Step-by-step solution

To solve this problem, we need to calculate the length of side BC BC in triangle ABC \triangle ABC given that the area is 32 and side AB=8 AB = 8 .

We start by using the area formula for a right triangle:

Area=12×base×height \text{Area} = \frac{1}{2} \times \text{base} \times \text{height}

In this context, the base AB AB is 8, and the height BC BC is the unknown we need to find. Thus, we have:

12×8×BC=32 \frac{1}{2} \times 8 \times BC = 32

We can simplify this equation:

4×BC=32 4 \times BC = 32

Now, solve for BC BC by dividing both sides of the equation by 4:

BC=324=8 BC = \frac{32}{4} = 8

Therefore, the length of side BC BC is 8\mathbf{8}.

Thus, the solution to the problem is BC=8 BC = 8 .

3

Final Answer

8

Practice Quiz

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Complete the sentence:

To find the area of a right triangle, one must multiply ________________ by each other and divide by 2.

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