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Grade 5 - Mathematics
7.15 Finding the Areas/Perimeters of Shapes

  • Perimeter is defined as the distance around a figure.
  • Perimeter of a rectangle is 2(l+w) units, 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 sq units.
  • Area of square is a x a sq units.
  • The space occupied by an object is called volume.
  • Volume of a cube is l x b x h cubic units.
Example: What is the area of room that measures 4 ft. by 7 ft. ?
Area = 4 x 7
Answer: 28 sq. ft

Directions: Answer the following questions. Also draw the figures and write at least ten examples of your own.
Q 1: What would you need to know to put a fence around a yard?
perimeter
area
area and perimeter

Q 2: What is the area of a classroom that is 12 feet by 24 feet?
288 sq. ft.
72 sq. ft.
288 ft.

Q 3: What is the perimeter of a room that is 9 feet by 8 feet?
72 square feet
72 feet
34 feet

Q 4: To lay carpeting in a room, you need to know the
area of the room
perimeter of the room
the area and perimeter of the room

Q 5: What is the area of a playground that is 45 feet by 65 feet?
2,925 sq. ft.
2,925 ft.
220 feet

Q 6: What is the area of a basketball court that is 25 feet by 42 feet?
1,050 feet
1,050 sq. feet
134 feet

Q 7: Find the area of a rectangle 10 cm by 84 cm.
2,352 sq. cm
224 sq. cm
840 sq. cm

Q 8: What is the perimeter of a yard that is 8 feet by 6 feet?
48 feet
48 sq. feet
28 feet

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Question 10: This question is available to subscribers only!


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