Question

I need help really quick with 1 math problem. ​

Answer 1

The length of image of AB after the dilation is 18 cm

Solution:

Given data:

Length of AB = 9 cm

Scale factor (k) = 2

Length of image of AB = ?

By the definition of scale factor,

`$k=\frac{\text { Length of Dilated image AB }}{\text { Length of original image } \mathrm{AB}}$`

`$2=\frac{\text { Length of Dilated image AB }}{9}`

Do cross multiplication, we get

2 × 9 = Length of dilated image of AB

18 = Length of dilated image of AB

Hence the length of image of AB after the dilation is 18 cm.