Dimensions of new rectangle after getting scaled by factor of 5 are 10cm by 15cm. Option (B) is correct.
What is scale factor?
In two similar geometric figures the ratio of their corresponding side is scale factor let the old dimension be x and scale factor be a then new dimension will be a*x
If a>1 then their will be enlargement in the geometric figures
Given that rectangle that is 2 cm by 3 cm has been scaled by a factor of 5
It means scale factor be 5
New dimensions of given rectangle will be found by multiplying by 5
New length and breadth are 2*5=10
3*5=15
Learn more about scale factor at
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