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It depends what shape you are trying to find. If it is a circle, use the following:

C = Dpi

Circumference = Diameter x Pi

Take the diameter of the circle, or twice the radius, and multiply it by pi, which is ~3.14

If it is any other shape, just add up the sides if they are given.

Q: What is the formula to find the perimiter?

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2 * pi * r

Add the four sides.

To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle. To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle.

Heron's formula, is basically a way to find the are of any triangle, as long as it has the sides of a, b, and c. For example, if a scalene has sides of 12, 15, and 7, you can use heron's formula to find the area. The formula is the square root of s(s-a)(s-b)(s-c). S is basicall half of the perimiter, and a, b, and c are the lengths of the sides.

well, you really have to add up the sides. if you have a 7 by 34 rectangle, you add up like this; 7+7+34+34. it'll be the perimiter around the shape

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2 * pi * r

to find the perimiter you just add up all the sides....Perimiter is the same for every figure.

multiply all of the sides than that is your answer

Add the four sides.

The formula for finding the perimiter of a rectangle is add up all of its sides

Add up the sides.

Add together the 4 sides

To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle. To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle.

Heron's formula, is basically a way to find the are of any triangle, as long as it has the sides of a, b, and c. For example, if a scalene has sides of 12, 15, and 7, you can use heron's formula to find the area. The formula is the square root of s(s-a)(s-b)(s-c). S is basicall half of the perimiter, and a, b, and c are the lengths of the sides.

well, you really have to add up the sides. if you have a 7 by 34 rectangle, you add up like this; 7+7+34+34. it'll be the perimiter around the shape

simply to find area,distance, and perimiter

C = (pi)/d or c = 2(pi)r.