Checking understanding of perimeter

Maths

In this unit, pupils have derived the formula for the circumference and area of a circle. In the future unit, this knowledge is combined with knowledge of fractions to find the arc length and area of a sector.

 In the prior unit, pupils learnt how to derive and use the formula for the area of a triangle and trapezium. In this unit, this knowledge is called upon to find the volume of different prisms and area of composite shapes.

Perimeter, area and volume

The {{ }} is the distance around a 2D shape.

Which of the units could be used to measure perimeter?

When $$a = 5$$ the perimeter of the octagon is {{ }} mm.

The perimeter of the hexagon is 24 cm. Find the value of $$a$$.

The perimeter of the compound rectilinear shape is {{ }} cm.

Which of these units are a measure of length?

The image shows a wall whose length has been measured in four parts. The total length of the wall is {{ }} m.

A {{ }} shape is a shape created using two or more basic shapes.

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