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BECE Mathematics 2012 Paper

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Question : 34

Total: 40

In the diagrams below, triangle

A_1 B_1 C_1

is an enlargement of triangle

A B C

. Determine the scale factor

0.50
0.75
2.00
4.00

Solution:

\;\; \text{ Scale factor } \;=\; \frac{ \;\text{ Size of Image }\; }{ \;\text{ Size of corresponding object side }\; }

\;\; \text{ Scale factor } \;=\; \frac{8 \text{ cm}}{4 \text{ cm}} =\; \frac{6 \text{ cm}}{3 \text{ cm}} = 2

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