Question

The area of the rectangular surface is 12cmsq. If we increase the length of all its sides 3 times, the area of the new suface will be.​​

Answer 1

Answer:

may be 48

Step-by-step

hsajshkkllsaasyjvx

Answer 2

       $\underline{\bold{Answer:}}$

       $\text{Area of new rectangle = 9(Area of original rectangle)}$

       $\underline{\bold{Step-by-step-explaination:}}$

       $\text{Length of original rectangle}= l$

       $\text{Breadth of original rectangle}= b$

$\implies\text{Area of original rectangle} = lb = 12\text{ cm}^{2}$

       $\text{We have to find the area if the length of all sides is increase by 3 times}$

       $\text{Length of new rectangle}= 3l$

       $\text{Breadth of new rectangle}= 3b$

$\implies \text{Area of new rectangle}= (3l)(3b) = 9lb$

       $\text{We know that, Area of original rectangle = }lb$

$\implies \text{Area of new rectangle = 9(Area of original rectangle)}$