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if you have a box that is 9cm long and 3cm wide then you would say width + length + width + length because the side opposite from 3cm is also 3cm and the side opposite 9cm is also 9cm. so you would add: 9cm+9cm+3cm+3cm = 24cm

if you have a box that is 9cm long and 3cm wide then you would say width + length + width + length because the side opposite from 3cm is also 3cm and the side opposite 9cm is also 9cm. so you would add: 9cm+9cm+3cm+3cm = 24cm

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Q: What is perimeter of 9cm x 3cm?

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it is 81cm

you cant do that becaues to get a perrimetr you need to add all the sides. when you do that it wll either be less then 9 or more then 9 in conclusion you cant get a shape that has a perimeter of

Perimeter = 6cm + 6cm + 9cm + 9cm = 30cm

Pentagon has 5 sides Regular => each side 9cm => perimeter = 5 x 9cm = 45cm

3cm x 9cm = 27cm2 (27 square centimetres)

9cm + 5cm + 9cm + 5cm = 28cm

63 cmPerimeter = 2 x (Length + Width) = 2 x (9cm + 7cm) = 2 x 16cm = 32cm

9cm

12cm (4 sides x 3 = 12)

If you're talking about a five sided figure, just add up your figures.

31 centimeters

The perimeter of a circle is its circumference and it is: 2*pi*radius or pi*diameter

The surface area is 226.2cm2

what is the perimeter and area of a rectangle 3cm long and 3cm wide

any 2-D shape could have a perimeter of 9cm. One example is a square with sides of 9/4 cm.

19 cm x 9cm x 9cm.

The perimeter would be 8 + 9 + 10 = 27cm

It is: 9*3 = 27 square cm

18cm

The formula for perimeter is P=2XL+2XW which is Perimeter = 2 X length + 2 X Width. We want to replace L and W with the the numbers 9 and 5. I don't know which is which but lets say the 9 is the length and 5 is the width. So the new number sentence would be P=2X9+2X5. So now it's time to solve. 2X9=18. 2X5=10. 10+18=28. Your perimeter would be 28cm. Hope this helped! :)

28 cm

Add all the sides of the irregular figure to the obtain the perieter. In the this particular case the permeter will be 2+3+4+9 =18 cms.

16cm.

4cm

For a square Area = Side2 thus Side = √Area = √81 = 9cmFor a square, Perimeter = 4 x Side = 4 x 9 = 36cm