Answer:

Step-by-step explanation:
If
, and 
then
can be calculated via:

Answer:
The length of a is 3 units
And breadth of a is 1 units
The length of b is 9 units and the Breadth of b is 3 units.
Therefore, Ratio of their sides=1:3.
Therefore, Scale os 1:3
Answer:
the area is 289
Step-by-step explanation:
the formula for calculating the perimeter of a square is the side*4
68/4=17
the formula for calculating tha area is side*side
17*17=289
Answer:
All real numbers less than or equal to
Step-by-step explanation: