Question
A triangle ABC has been enlarged by scale factor m = 2.5 to the triangle A' B' C' Calculate : the length of C' A' if CA = 4 cm.
✓
Answer
Given that ABC is a triangle that has been enlarged by scale factor m = 2.5 to the triangle A' B' C'
A' B' = 6cm
So, AB(2.5) = A' B'
$\Rightarrow$ AB(2.5) = 6
$\Rightarrow$ AB = 2.4 cm
If CA = 4cm.
So, CA(2.5) = C' A'
$\Rightarrow$ (4) (2.5) = C' A'
$\Rightarrow$ C' A' = 10cm
A' B' = 6cm
So, AB(2.5) = A' B'
$\Rightarrow$ AB(2.5) = 6
$\Rightarrow$ AB = 2.4 cm
If CA = 4cm.
So, CA(2.5) = C' A'
$\Rightarrow$ (4) (2.5) = C' A'
$\Rightarrow$ C' A' = 10cm
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