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### Grade 4 - Mathematics12.7 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 units2. Area of square is a x a units2. The space occupied by an object is called volume. Volume of a cube is l x w x h units3. Directions: Answer the following. Also write at least 5 examples of your own and draw a square and rectangle and find its area and perimeter.
 Q 1: The formula for perimeter of a rectangle isP = l + wP = 2 x (l + w)P = l x w Q 2: 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 millimeterFalseTrue Q 3: The formula for volume of a cube islength x widthlength + width + heightlength x width x height Q 4: Perimeter of a rectangle P = 2 x (l + w) can also be written asP = l + l + w + wP = l + 2wP = w + 2l Q 5: The formula for perimeter of a squarelength + lengthlength + length + length + lengthlength - length Q 6: The perimeter isthe distance around the figurehow much space it occupiesthe space inside a figure Q 7: The formula for area of a rectangle islength - widthlength x widthlength + width Q 8: The volume of a figure is how much space it occupiesFalseTrue Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!