I need help with this , Geometry

19.42

Step-by-step explanation:

To find the distance, we need to use the distance formula.

With the given points, we can plug them in and solve.

         [parenthesis]

                      [exponent]

                              [add]

                                      [square root]

Now, we know the distance is 19.42.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm