G8. CLS9. C7. Shapes and measurements

Chapter 7: Shapes and measurements

CLS Coursebook 9

​7.1 Circumference and area of a circle

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.14. Round your answers correct to 1 decimal place (1 d.p.).

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.14. Round your answers correct to 1 decimal place (1 d.p.).

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.14. Round your answers correct to 1 decimal place (1 d.p.).

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.142. Round your answers correct to 2 decimal places (2 d.p.).

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.142. Round your answers correct to 2 decimal places (2 d.p.).

Draw

Copy and complete the workings to work out the area of each circle.

Use π = 3.142. Round your answers correct to 2 decimal places (2 d.p.).

Match

Using estimation, match each question card with

the correct answer card. Do not use a calculator.

47.78

110.29

59.7

166.50

27.8

• 47.78

• 110.29

• 59.7

• 166.50

• 27.8

Multiple Choice

Find the Area of a circle with diameter 2.6 cm.

Use $$\pi=3.142$$ . Round your answers correct to 2 decimal places

(2 d.p.).

• 5.30 cm²

• 5.31 cm²

• 5.32 cm²

• 5.33 cm²

Multiple Choice

Find the Area of a circle with radius 5 cm.

Give your answer correct to 3 significant figures (3 s.f.).

• 78.5 cm²

• 79.5 cm²

• 80.5 cm²

• 81.5 cm²

Multiple Choice

The circumference of a circular lawn is $$12\pi$$  m.

Find out the area of the lawn in term of $$\pi$$   .

• $$24\pi$$ cm²

• $$32\pi$$ cm²

• $$36\pi$$ cm²

• $$72\pi$$ cm²

Multiple Choice

The circumference of a circular lawn is $$12\pi$$  m.

Find out the area of the lawn in term of $$\pi$$   .

• $$24\pi$$ cm²

• $$32\pi$$ cm²

• $$36\pi$$ cm²

• $$72\pi$$ cm²

Chapter 7: Shapes and measurements

CLS Coursebook 9

​7.2 Areas of compound shapes

Draw

Copy and complete the workings to calculate the areas of these compound shapes.

Draw

Copy and complete the workings to calculate the areas of these compound shapes.

Draw

Copy and complete the workings to calculate the areas of these compound shapes.

Draw

Copy and complete the workings to calculate the areas of these compound shapes.

Draw

For each of these compound shapes, work out the missing lengths shown by red box.

Draw

For each of these compound shapes, work out the missing lengths shown by red box.

Draw

For each of these compound shapes, work out the missing lengths shown by red box.

Chapter 7: Shapes and measurements

CLS Coursebook 9

​7.2 Large and small units

Dropdown

A milligram is a very small measure of ​

Select answer

. It is represented by the letters ​

Select answer

. 1 milligram = 0.001 ​

Select answer

which is the same as 1 mg = 1 × 10⁻³ g. You can also say that there are ​

Select answer

milligrams in a gram or 1 milligram is one thousandth of a gram.

Dropdown

A nanometre is a very small measure of ​

Select answer

. It is represented by the letters ​

Select answer

. 1 nanometre = 0.000 000 001 ​

Select answer

which is the same as 1 nm = 1 × 10⁻⁹ ​

Select answer

. You can also say that there are ​

Select answer

nanometres in a metre or 1 nanometre is one billionth of a metre.

Dropdown

A kilolitre is a very large measure of ​

Select answer

. It is represented by the letters ​

Select answer

. 1 ​

Select answer

= 1000 litres which is the same as 1 kL = 1 × 10³ L. You can also say that there are one thousand ​

Select answer

in a kilolitre or 1 litre is ​

Select answer

of a kilolitre.

Dropdown

A gigametre is a very ​

Select answer

measure of length. It is represented by the letters ​

Select answer

. 1 gigametre = 1 000 000 000 ​

Select answer

which is the same as 1 Gm = 1×10⁹ metres. You can also say that there are ​

Select answer

metres in a gigametre or that 1 metre is ​

Select answer

of a gigametre.

Match

Match the following

• $$600\ \mu g$$

• $$300\ \mu g$$

• $$600\ \eta g$$

• $$30\ mg$$

• $$60\ \mu g$$

Homework
Exercise 7.2 : No. 3(b), 3(c), 3(d), 5(a), 5(b)
Exercise 7.3 : No. 5 (all) and 6 (all)