Finding the Height of the Triangle

Oct 13, 2025 by wbrum.org 113 views

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Introduction

The area of a triangle is given by the formula $$A = \frac{1}{2}bh$$, where $b$ is the base of the triangle and $h$ is the height of the triangle. In this problem, we are given the area of the triangle as $$81 \sqrt{3} , \text{cm}^2$$ and we need to find the height of the triangle.

Understanding the Formula

The formula for the area of a triangle is $$A = \frac{1}{2}bh$$. This formula can be rearranged to solve for the height of the triangle, which is $$h = \frac{2A}{b}$$. This formula will be used to find the height of the triangle.

Given Information

We are given the area of the triangle as $$81 \sqrt{3} , \text{cm}^2$$. We can use this information to find the height of the triangle.

Finding the Height of the Triangle

To find the height of the triangle, we need to know the base of the triangle. However, the base of the triangle is not given. But we can use the fact that the area of the triangle is given in terms of the base and height. We can use the formula $$A = \frac{1}{2}bh$$ to find the base of the triangle.

Using the Formula to Find the Base

We can rearrange the formula $$A = \frac{1}{2}bh$$ to solve for the base of the triangle, which is $$b = \frac{2A}{h}$$. However, we are given the area of the triangle and we need to find the height of the triangle. We can use the fact that the area of the triangle is given in terms of the base and height to find the base of the triangle.

Finding the Base of the Triangle

We can use the formula $$A = \frac{1}{2}bh$$ to find the base of the triangle. We are given the area of the triangle as $$81 \sqrt{3} , \text{cm}^2$$. We can substitute this value into the formula to get $$81 \sqrt{3} = \frac{1}{2}bh$$. We can then solve for the base of the triangle.

Solving for the Base of the Triangle

We can solve for the base of the triangle by multiplying both sides of the equation by 2, which gives us $$162 \sqrt{3} = bh$$. We can then divide both sides of the equation by the height of the triangle, which gives us $$b = \frac{162 \sqrt{3}}{h}$$.

Finding the Height of the Triangle

We can use the formula $$b = \frac{162 \sqrt{3}}{h}$$ to find the height of the triangle. We are given the base of the triangle as $$b = 36 \sqrt{3}$$ cm. We can substitute this value into the formula to get $$36 \sqrt{3} = \frac{162 \sqrt{3}}{h}$$.

Solving for the Height of the Triangle

We can solve for the height of the triangle by multiplying both sides of the equation by the height of the triangle, which gives us $$36 \sqrt{3}h = 162 \sqrt{3}$$. We can then divide both sides of the equation by $$36 \sqrt{3}$$, which gives us $$h = \frac{162 \sqrt{3}}{36 \sqrt{3}}$$.

Simplifying the Expression

We can simplify the expression $$h = \frac{162 \sqrt{3}}{36 \sqrt{3}}$$ by canceling out the $$\sqrt{3}$$ terms, which gives us $$h = \frac{162}{36}$$.

Finding the Height of the Triangle

We can simplify the expression $$h = \frac{162}{36}$$ by dividing both the numerator and the denominator by their greatest common divisor, which is 18. This gives us $$h = \frac{9}{2}$$.

Conclusion

The height of the triangle is $$\frac{9}{2}$$ cm.

Final Answer

The final answer is: $\boxed{\frac{9}{2}}$

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Introduction

In our previous article, we discussed how to find the height of a triangle given its area. We used the formula $$A = \frac{1}{2}bh$$ to find the height of the triangle. In this article, we will answer some frequently asked questions related to finding the height of a triangle.

Q: What is the formula for finding the height of a triangle?

A: The formula for finding the height of a triangle is $$h = \frac{2A}{b}$$, where $A$ is the area of the triangle and $b$ is the base of the triangle.

Q: What is the base of the triangle?

A: The base of the triangle is not given in the problem. However, we can use the fact that the area of the triangle is given in terms of the base and height to find the base of the triangle.

Q: How do I find the base of the triangle?

A: We can use the formula $$A = \frac{1}{2}bh$$ to find the base of the triangle. We can rearrange this formula to solve for the base of the triangle, which is $$b = \frac{2A}{h}$$.

Q: What if I don't know the height of the triangle?

A: If you don't know the height of the triangle, you can use the formula $$A = \frac{1}{2}bh$$ to find the height of the triangle. We can rearrange this formula to solve for the height of the triangle, which is $$h = \frac{2A}{b}$$.

Q: Can I use the formula $$h = \frac{2A}{b}$$ to find the height of the triangle if I don't know the base of the triangle?

A: Yes, you can use the formula $$h = \frac{2A}{b}$$ to find the height of the triangle if you don't know the base of the triangle. However, you will need to know the area of the triangle and the base of the triangle.

Q: What if I have a right triangle?

A: If you have a right triangle, you can use the formula $$A = \frac{1}{2}bh$$ to find the height of the triangle. However, you will need to know the base of the triangle and the height of the triangle.

Q: Can I use the formula $$h = \frac{2A}{b}$$ to find the height of a right triangle?

A: Yes, you can use the formula $$h = \frac{2A}{b}$$ to find the height of a right triangle. However, you will need to know the area of the triangle and the base of the triangle.

Q: What if I have an isosceles triangle?

A: If you have an isosceles triangle, you can use the formula $$A = \frac{1}{2}bh$$ to find the height of the triangle. However, you will need to know the base of the triangle and the height of the triangle.

Q: Can I use the formula $$h = \frac{2A}{b}$$ to find the height of an isosceles triangle?

A: Yes, you can use the formula $$h = \frac{2A}{b}$$ to find the height of an isosceles triangle. However, you will need to know the area of the triangle and the base of the triangle.

Conclusion

In this article, we answered some frequently asked questions related to finding the height of a triangle. We discussed how to use the formula $$A = \frac{1}{2}bh$$ to find the height of a triangle and how to use the formula $$h = \frac{2A}{b}$$ to find the height of a triangle.

Final Answer

The final answer is: $\boxed{\frac{9}{2}}$