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:

200 cm sq.

Step-by-step explanation:

Let the length of original square be x cm

So area x sq. = 8 (1)

now new length= 5x cm

so new area =(5x) sq.

=>25x sq.

Taking the value of x sq. from (1)

so,25×8

=>200 cm sq.