Oh, dude, 18 cm squared means you've got a square that's 18 cm on each side. So, basically, it's like having a square piece of paper that's 18 cm long on all sides. It's not rocket science, just some basic geometry, man.
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18 cm *18 cm = 324 sqare cm.
To find the dimensions of a rectangle with an area of 18 square centimeters and a perimeter of 38 centimeters, we need to set up a system of equations. Let the length of the rectangle be represented by L and the width be represented by W. The equations would be LW = 18 and 2L + 2W = 38. By solving this system of equations, we find the dimensions of the rectangle to be 6 cm by 3 cm.
Think of a square that is 40 centimetres x 40 cm. That is very slightly smaller.
If you mean: 1.5 times 1.8 then it is 2.7 square cm
8 of them.