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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Oh, dude, the perimeter of a rectangle is just the sum of all its sides, so for a 9cm by 3cm rectangle, you just add up all the sides, which gives you 9 + 9 + 3 + 3, which equals 24cm. Easy peasy, right? Like, who needs a calculator for that?
The perimeter of a rectangle is calculated by adding the lengths of all its sides. In this case, the rectangle has two sides of 9 cm and two sides of 3 cm. Therefore, the perimeter would be 2(9 cm) + 2(3 cm) = 18 cm + 6 cm = 24 cm.
Well, honey, making a shape with a perimeter of 9cm is as easy as pie. You could have a triangle with sides measuring 3cm, 3cm, and 3cm. Or you could have a rectangle with sides measuring 2cm and 2.5cm. Just remember, the perimeter is the sum of all the sides, so get those measuring tapes out and get creative!
9cm + 5cm + 9cm + 5cm = 28cm
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.
Area = (length of a side)2 = 81 square centimeters Perimeter = 4 x (length of a side) = 36 cm.
28 cm