The perimeter is the sum of the lengths of the sides that enclose a 2D shape, e.g. the sum of the four sides of a square make up the perimeter of the square. The area of a closed 2D shape is the space enclosed by the perimeter of the shape.
The following symbols may be of use in doing this quiz:
Do this 11-plus Maths quiz and revise a few simple ideas about perimeter and area. When you are comfortable with these easy quizzes, move onto our next two sets - medium and difficult - on the same subject.
Good luck!
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Learn this fact!
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The area of a square = length × width BUT length = width in a square
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The area of a rectangle = length × width
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Area of a triangle = 1?2 × base × height
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Learn this fact! ? = 22?7 or about 3.14
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The sides which form the right angle are both of length 6 cm ? area = 1?2 × base × height = 1?2 × 6 × 6 = 18 cm2
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Perimeter of a rectangle = 2 × length + 2 × width = 2 × 14 + 2 × 10 = 28 + 20 = 48 cm
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Double the area of the given triangle: two right angled triangles form a square or a rectangle
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1 square metre = 1 m × 1 m = 1 m2. 1 m equals 100 cm BUT 1 m2 = 100 cm × 100 cm = 10,000 cm2
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1 cm2 = 1 cm × 1 cm = 1 cm2. 1 cm equals 10 mm BUT 1 cm2 = 10 mm × 10 mm = 100 mm2
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