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MEAP Preparation - Grade 4 Mathematics
2.7 Perimeter, Area and Volume Facts
Perimeter is defined as the distance around a figure.
Perimeter of a rectangle is 2(l+w) metres, where l is the length and w is the width.
Perimeter of a square is 4a units where a is the length of the side.
Area of rectangle is l x w units
Area of square is a x a units
The space occupied by an object is called volume.
Volume of a cube is l x w x h units
Answer the following. Also write at least 5 examples of your own and draw a square and rectangle and find its area and perimeter.
: Perimeter of a rectangle P = 2 x (l + w) can also be written as
P = l + l + w + w
P = w + 2l
P = l + 2w
: You always measure area in square units. Example: US Customary system : square mile, square yard, square foot, square inch. Metric units: square kilometer, square centimeter, square meter, square millimeter
: Perimeter of a square is 4 x length which can also be written as
length + length + length + length
length + length + length
4 + length
: The volume of a figure is how much space it occupies
: The formula for area of a rectangle is
length - width
length + width
length x width
: The formula for volume of a cube is
length + width + height
length x width x height
length x width
: The formula for perimeter of a rectangle is
P = l x w
P = 2 x (l + w)
P = l + w
: The formula for area of a square
length + length
length - length
length x length
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