# What is area of equilateral triangle?

If the sides of an equilateral triangle are all of length

The area of the rectangle, which is the same as the area of the original triangle is:

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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- How do you find the distance from the line with equation #y=9x-3# to the point at (-3,2)?
- A triangle has sides with lengths: 1, 5, and 8. How do you find the area of the triangle using Heron's formula?

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