If each ribbon will be 3.68 inches, and she needs 1000 ribbons, then multiply the two to find the total length of ribbon she needs.
3.68 x 1000 = 3680
So she will need 3680 inches of ribbon in total
Answer:

Step-by-step explanation:
- Pythagorean theorem


Sure where is the problem
Answer:
SA = 2400 cm²
Step-by-step explanation:
SA of a cube = S² x 6 (the number of its faces)
SA = 20² x 6
SA = 400 x 6
SA = 2400 cm²