Answer:
34 cm
Step-by-step explanation:
The actual question is How many inches of ribbon Peter will need to make the "X".
Using the Pythagorean theorem, the length of the diagonal of a square with 12 cm sides is:

Since the "X" requires two diagonals, the length of ribbon required is:

The length required, rounded to the nearest centimeter, is 34 cm.
348 in. 2
2·(8·9+6·9+6·8)=348
You would have to do 500x 4 which is 2000
Answer:
19
Step-by-step explanation:
51-(16)x2
16x2=32
51-32=19