Let h be the height of the cylinder and r the radius of the circular top/bottom. If you cut the cylinder down one side and roll it out, you have a rectangle. The length of the side is h and the width would be 2pi*r (the perimeter of a circle). Therefore, the perimeter of a cylinder is 2pi*r + 2h
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The perimeter of a triangle is the distance around it. Add the lengths of the three sides to find the perimeter.
you can only find the perimeter of shapes, honey, not fractions.
To find the perimeter of a figure, add all the lengths of the edges of the figure. The sum of the sides is the perimeter.
find the perimeter and area of a rectangle that is 15cm long and 5cm wide
The perimeter is its 4 sides added together