Year 9 Revision 2026 T1

Similarity

100

Q1 (Easy)
Triangle A has sides 3 cm, 4 cm, 5 cm.
Triangle B is similar with a scale factor of 2.
Find the sides of Triangle B.

6,8,10cm

200

A triangle has a side of 6 cm.
An enlarged similar triangle has a corresponding side of 9 cm. Find the scale factor.

1.5 Scale Factor

300

Triangle A has sides 5 cm, 7 cm, and 9 cm.
Triangle B is similar with a scale factor of 3.
Find the perimeter of Triangle B.

63cm

400

SLIDE 3

6

500

A 0.8 m tall stick casts a shadow of 1.2 m.
At the same time, a building casts a shadow of 15 m. Find the height of the building.

10m

Pythagoras

100

Find the hypotenuse of a right triangle with sides:
3 cm and 4 cm

5cm

200

Find the hypotenuse of a triangle with sides:
5 cm and 12 cm

13cm

300

A triangle has a hypotenuse of 26 cm and one side of 10 cm.
Find the other side.

24cm

400

A right triangle has a hypotenuse of 17 cm and one side of 8 cm. Find the other side.

15 cm

500

A right triangle has a hypotenuse of 30 cm and one side of 18 cm.
Find the other side.

24cm

TSA

100

Find the TSA of a rectangular prism with:

Length:3cm Width:4cm Height: 5cm

94cm²

200

Find the TSA of a cube with a side length of 6cm.

216cm²

300

SLIDE 2

120cm²

400

Find the TSA of a Cylinder with:

Circle Diameter of 7cm. Height of 13cm.

362.85cm²

500

Find the TSA of a Cylinder cut in half vertically. It has:

Radius: 4cm. Height 10cm. 

255.93 cm²

Volume

100

Find the volume of a rectangular prism with:
Length = 5 cm, Width = 3 cm, Height = 4 cm

60cm³

200

Find the volume of a cylinder with:
Radius = 3 cm, Height = 8 cm

226.19cm³

300

A triangular prism has a triangular cross-section with:
Base = 6 cm, Height = 4 cm, Length of prism = 10 cm
Find the volume.

120cm³

400

A cylinder has a diameter of 10 cm and a height of 12 cm. Find the volume.

942.48cm³

500

A triangular prism has a right-angled triangular cross-section with sides: Base = 5 cm, Hypotenuse = 13 cm
Length of prism = 15 cm. Find the height of the triangle, then the volume of the prism.

Height is 12cm. 450cm³

Random

100

Convert 147cm to metres.

1.47m

200

Convert 0.47km to cm

47,000cm

300

A 1.5 m tall stick casts a shadow that is 2 m long.
At the same time, a tree casts a shadow that is 8 m long. Find the height of the tree.

6m

400

An isosceles triangle has a base of 6cm and side lengths of 0.15m. The scaled triangle has a base of 20mm, find the side lengths of the scaled triangle in cm.

5cm

500

A rectangular prism has a volume of 640m³. It has a length of 20m, a width of 4m, find it's height.

8m