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•  » I do not understand perimeter and area. Can you help me?

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VR Hawks
2006-01-08 15:18:09

Perimeter = the total lengths of a shape (rectangle, square, etc.)

Area = The space inside the shape

Pi = 3.1416...

mathsyperson
2006-01-08 09:23:51

Perimeter is the length of the border of a shape. You add up the lengths of all the sides to get the perimeter.

Area is the... area inside a shape. There are various different methods of working it out depending on what the shape is.

Pi is roughly 3.14. That's probably the most accurate value you'll need, although it wouldn't hurt to use 3.142.
A rough value that's easy to remember is 22 ÷ 7, and a much better value that's slightly harder to remember is 355 ÷ 113.

Edit: MathsIsFun got there first. Oh well. I gave some pi values, so the post wasn't completely useless.

MathsIsFun
2006-01-08 09:21:17

For "perimeter" you could think: how long would a piece of string be to go around the edge of the circle (or square, or whatever shape).

For area, you could think how many brush strokes you would need to paint inside the circle (or square, etc).