Asked by SAGARIKA · Delhi Public School Gandhidham
Answer: B. 14 cm
Perimeter=2(l+b)
52=2(l+12)
52÷2=l+12
26=l+12
26-12=l
14=l
Now to check if our answer is correct we would check it by the help of the area which is 168cm².
14×12=168
This, our answer is correct.
Answering after opening this box earns no Practice Points.