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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?
area and perimeter
perimeter
area

Q 2: What is the perimeter of a room that is 9 feet by 8 feet?
34 feet
72 feet
72 square feet

Q 3: What is the area of a classroom that is 12 feet by 24 feet?
288 ft.
288 sq. ft.
72 sq. ft.

Q 4: The area of a room 3 feet by 5 feet is
20 sq. ft.
15 sq. ft.
16 sq. ft.

Q 5: Find the area of a rectangle 10 cm by 84 cm.
224 sq. cm
840 sq. cm
2,352 sq. cm

Q 6: What is the area of a playground that is 45 feet by 65 feet?
2,925 sq. ft.
220 feet
2,925 ft.

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Question 8: This question is available to subscribers only!


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