Question

Determine the missing side measures

Answer 1

I'm naming the left shape shape A and the right one shape B to make things easier to understand:

If these are the same shapes we can assume that Shape A was reduced by a factor of 2.5 to form Shape B (10/4=2.5).

With this number we can solve for x by multiplying 5 by 2.5 since we are enlarging Shape B to create Shape A. 5*2.5 is 12.5 so x=12.5.

For the two other missing sides I did the same step except dividing instead because we are going from big to small.

Top side: 8/2.5= 3.2

Right side: 10/2.5= 4

Answer 2

The answer is 25 which is by multiplying 4/10 and 5/x and the devide by 4