A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cm and its width is increased also by x cm so as to make it a square, then its areas increases by:

A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cm and its width is increased also by x cm so as to make it a square, then its areas increases by:

A 4 cm2

B 144 cm2

C 12 cm2

D 2 cm2

Solution

Correct Answer: Option A