Question

Please solve it fast​

Answer 1

Answer:

Length is 14cm and breadth is 7cm

Step-by-step explanation:

soln,

l=2b

or, 2(l+b)=42

or, 2(2b+b)= 42

or, 2* 3b=42

or, 6b=42

or b =7 cm

then,

l=2b

= 2*7

= 14 cm

therefore, Length is 14 cm and breadth is 7 cm.