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The perimeter of a shape is the distance around its edge. To work out the perimeter of a hexagon multiply the length of one of its sides by 6. If its sides are 2 meters long its perimeter would be 12 meters. The area is the size of the surface. Knowing the area of a wall is important if you are planning to give it a lick of paint - otherwise how will you know how many tins of paint to buy?!

1.

How many cm^{2} is equivalent to 1m^{2}?

10cm^{2}

100cm^{2}

1,000cm^{2}

10,000cm^{2}

There are 100cm in 1m so 100 x 100 = 1,000

2.

What is the perimeter of a regular pentagon with sides of 5cm?

24cm

100cm

10cm

25cm

A pentagon has 5 sides, therefore 5 x 5cm will give you the perimeter

3.

What is the formula for calculating the perimeter of a rectangle?

2 x length x 2 x width

2 x length + 2 x width

Length + width

Length x width

2 sides of a rectangle are one length whilst the other two sides are a different length, for example 2 sides are 4cm long and the other 2 sides are 6cm long. This rectangle would have a perimeter of 20cm

4.

A regular hexagon has a perimeter of 54cm. What is the length of the sides?

6cm

9cm

12cm

20cm

A regular hexagon has 6 equal sides. To calculate the length of each side, divide the perimeter by 6

5.

Which would be best measured in cm^{2}?

Area of a playground

Area of a town

Area of a desk top

Area of a pen tip

Towns might be measured in km^{2}, playgrounds in m^{2} and pen tips in mm^{2}

6.

What is the formula for calculating the perimeter of a regular hexagon?

4 x length of side

6 x length of side

6 x length + width

Length of side divided by 6

As a regular hexagon has 6 equal sides, just multiply the length of the sides by 6

7.

Which would be a good estimate of the area of a classroom?

1,000mm^{2}

100mm^{2}

10m^{2}

100m^{2}

10m^{2} would be large enough for a room in a house but not big enough for a classroom

8.

A rectangle has a perimeter of 38cm. The shortest sides are 7cm. What length are the two longest sides?

12cm

14cm

21cm

28cm

2 x 7 = 14

38 - 14 = 24

24 ÷ 2 = 12

38 - 14 = 24

24 ÷ 2 = 12

9.

What is the formula for calculating the area of a rectangle?

2 x length x 2 x width

2 x length + 2 x width

Length + width

Length x width

If a rectangle measured 7cm by 10cm its area would be 70cm^{2}

10.

Which would be a suitable unit to measure the area of a chunk of chocolate?

Square grams

Square meters

Square millimeters

Square milliliters

Grams measure weight and milliliters measure volume. Square meters measure area but chocolate bars aren't that big!