Discover the formula for finding the area of a circle in this quiz.

Perimeter and Area (Easy)

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:

• millimetre (mm); centimetre (cm); metre (m)
• square millimetre (mm2); square centimetre (cm2); square metre (m2)

Do this 11-plus Maths quiz and revise a few simple ideas about perimeter and area. When you are comfortable, move onto our next two quizzes on the same subject. Good luck!

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1. If you are provided with a ruler, what would be the best way to find the area of a square?
The area of a square = length × width BUT length = width in a square
2. A right angled triangle has an area of 45 cm2. What is the area of the rectangle formed by using two such triangles?
Double the area of the given triangle: two right angled triangles form a square or a rectangle
3. What is the perimeter of a rectangle of width 10 cm and length 14 cm?
Perimeter of a rectangle = 2 × length + 2 × width = 2 × 14 + 2 × 10 = 28 + 20 = 48 cm
4. A square has a side length of 6 cm. If the square is cut along one of its diagonals, what will be the area of one of the resulting triangles?
The sides which form the right angle are both of length 6 cm ∴ area = 12 × base × height = 12 × 6 × 6 = 18 cm2
5. What is the perimeter of a circle called?
Learn this fact!
6. How many square centimetres are there in 1 m2?
1 square metre = 1 m × 1 m = 1 m2. 1 m equals 100 cm BUT 1 m2 = 100 cm × 100 cm = 10,000 cm2
7. If you are provided with a ruler, what would be the best way to find the area of a rectangle?
The area of a rectangle = length × width
8. What is the formula for finding the area of a circle?
Learn this fact! π = 227 or about 3.14
9. How many square millimetres are there in 1 cm2?
1 cm2 = 1 cm × 1 cm = 1 cm2. 1 cm equals 10 mm BUT 1 cm2 = 10 mm × 10 mm = 100 mm2
10. If you are provided with a ruler, what would be the best way to find the area of a right angled triangle?
Area of a triangle = 12 × base × height

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