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The area of equilateral triangle is numerically equal to its perimeter, then its perimeter correct to 2 decimal places is 20.78 units

Question

The area of an equilateral triangle is numerically equal to its perimeter, then its perimeter correct to 2 decimal places is 20.78 units.

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Solution

The problem states that the area of an equilateral triangle is numerically equal to its perimeter.

The formula for the area of an equilateral triangle is √3/4 * side^2 and the formula for the perimeter is 3 * side.

So, we can set up the equation as follows:

√3/4 * side^2 = 3 * side

Solving for side, we get side = 3 * 4/√3 = 12/√3 = 4√3.

So, the side of the triangle is 4√3 units.

The perimeter of the triangle is 3 * side = 3 * 4√3 = 12√3 units.

Using the approximation √3 ≈ 1.732, we find that the perimeter is approximately 12 * 1.732 = 20.78 units, rounded to two decimal places.

This problem has been solved

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