Answer:
it is 9 cm because 9 x 8 is 72
Step-by-step explanation:
9 cm
OHHHHHHH..........OK
1. 3.572 x 10^(-1)
2. 3.108 x 10^(6)
3. 5.31881533 x 10^(-6)
4. 4.18676122 x 10^(-1)
Hope this helps