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Q: How do l work out the perimeter of a triangle?

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add up the length of all the sides

l + w + √(l2 + w2)

the ratio of the perimeter of triangle ABC to the perimeter of triangle JKL is 2:1. what is the perimeter of triangle JKL?

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By adding the three sides.

I hope you want to know the Perimeter. Perimeter is the total length of the boundary of the region bounded by a shape. For a rectangle it is the sum of the 4 bounding sides, or 2*(L+B), where L is Length of the rectangle and B is Breadth of the rectangle. For a Triangle it is the sum of the 3 sides. If you consider an equilateral triangle. By property the 3 sides of an equilateral triangle are equal. Hence the Perimeter of an equilateral triangle is denoted as; 3*a, where a is the length of one of the sides of the triangle. It is possible that the perimeter of a rectangle is same as that of many different types of triangles. We can formulate a relationship for a special case where the perimeter of a rectangle is equal to the perimeter of an equilateral triangle; P(R) = P(ET), P(R) is perimeter of rectangle and P(EQ) is perimeter of Equilateral triangle. P(R)=2(L*B) = P(EQ) = 3*a; hence, a = (2/3)*(L*B) = P(R)/3. i.e., the sides of the Equilateral triangle are one thirds of the perimeter of the rectangle.

-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.

The perimeter of a triangle is the sum of its 3 sides

The perimeter of a triangle is the sum of its three sides.

Add up the sides.

There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!

The perimeter of Bermuda triangle is 5500km By hazwan

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