To find the perimeter of a regular pentagon with 9cm sides, you would multiply the length of one side by the total number of sides. In this case, 9cm x 5 sides = 45cm. Therefore, the perimeter of a regular pentagon with 9cm sides is 45cm.
Perimeter = 6cm + 6cm + 9cm + 9cm = 30cm
63 cmPerimeter = 2 x (Length + Width) = 2 x (9cm + 7cm) = 2 x 16cm = 32cm
9cm + 5cm + 9cm + 5cm = 28cm
31 centimeters
If you're talking about a five sided figure, just add up your figures.
any 2-D shape could have a perimeter of 9cm. One example is a square with sides of 9/4 cm.
Oh, what a happy little rectangle we have here! To find the perimeter, you simply add up all the sides. So, for this rectangle with sides of 9cm and 5cm, the perimeter would be 2(9cm) + 2(5cm) = 18cm + 10cm = 28cm. Just a few simple brushstrokes and you've got your answer!
Area = (length of a side)2 = 81 square centimeters Perimeter = 4 x (length of a side) = 36 cm.
The perimeter would be 8 + 9 + 10 = 27cm
28 cm
An arbitrary large number is the answer for anyrectangle, up to that with a length of 9cm, and 0cm as the width will have a perimeter of 18cm.Similarly, any rectangle up to that with sides 0cm long, and a width of 9cm will have your 18cm perimeter.