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Perimeter and Area 3 (Easy)
Welcome to the third of our Easy level Eleven Plus maths quizzes on Perimeter and Area. In the previous quizzes we learned some formulae (that’s the plural of formula) to calculate the area and the perimeter of 2D (2 dimensional) shapes, like circles and squares. In this quiz we go over what we have learned already and give you a recap of those formulae.
The perimeter is the total length of all the sides of a shape. In circles, we call the perimeter the circumference.
The area is the amount of space taken up by a 2D shape. The way it is calculated is different in circles and squares. Can you remember the formulae? If not, don’t worry. The helpful comments which follow each question will explain anything you need to know.
So now it’s time for the quiz. Be sure to read each question thoroughly and to think about your answers. Some of the questions may have appeared in previous quizzes – that’s intentional. The more often you go over a fact, the more likely you are to remember it when your exams come along.
If the square has an area of 36 cm2, its sides will be 6 cm long: 6 x 6 = 36
There are 1,000 millimetres in 1 metre, so 1 m2 = 1,000 x 1000 mm2
1,000 x 1,000 = 1 million
120 ÷ 4 = 30
8 x 2 = 16
There are 100 mm2 in one cm2 so 16 x 100 = 1,600
100 x 100 = 10,000, so 1 metre is 10,000 cm2
1,000 x 1,000 = 1 million, so 1 metre is 1 million mm2
144 cm2 = length × length. If you know your times tables you will know that 12 x 12 = 144
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