Scale Factor
Scale Factor
Solve the clues to find the four-digit code to escape the classroom!
In each diagram, shape B is an enlargement of shape A.
Solve the clues to find the four-digit code to escape the classroom!
In each diagram, shape B is an enlargement of shape A.
a. Work out the scale factor of enlargement:
B
4cm
9cm
9cm
The code is the scale factor
in question a, the x-value
only in question b and the
answer to question c.
B
Exit Code:
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A
4cm
c. Shape A has a surface area of 400cm². Calculate the surface
area of shape B to the nearest cm².
12cm
4cm
12cm
c. Shape A has a surface area of 400cm². Calculate the surface
area of shape B to the nearest cm².
A
B
b. Work out the missing values x and y:
8c
12
m
cm
A
x
B
y
4cm
b. Work out the missing values x and y:
8c
12
m
cm
A
x
B
y
A
10cm
2.5cm
A
10cm
2.5cm
a. Work out the scale factor of enlargement:
The code is the scale factor
in question a, the x-value
only in question b and the
answer to question c.
B
Exit Code:
visit twinkl.com
Answers
Answers
Solve the clues to find the four-digit code to escape the classroom!
In each diagram, shape B is an enlargement of shape A.
Solve the clues to find the four-digit code to escape the classroom!
In each diagram, shape B is an enlargement of shape A.
a. Work out the scale factor of enlargement:
B
4cm
b. Work out the missing values x and y:
8c
12
m
cm
A
x
B
y
A
Scale factor = 4
10cm
2.5cm
Scale factor = 4
B
b. Work out the missing values x and y:
8c
12
m
cm
A
x
B
y
x = 6, y = 6
4cm
A
10cm
2.5cm
a. Work out the scale factor of enlargement:
9cm
9cm
c. Shape A has a surface area of 400cm². Calculate the surface
area of shape B to the nearest cm².
c. Shape A has a surface area of 400cm². Calculate the surface
area of shape B to the nearest cm².
The code is the scale factor
in question a, the x-value
only in question b and the
answer to question c.
400 × (1/3)² = 44cm²
Exit Code:
4
6
4
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4
4cm
Scale factor = 1/3
12cm
4cm
12cm
Scale factor = 1/3
B
A
x = 6, y = 6
B
A
The code is the scale factor
in question a, the x-value
only in question b and the
answer to question c.
400 × (1/3)² = 44cm²
Exit Code:
4
6
4
visit twinkl.com
4