1/6 = 2/12 because 12 is 2 times 6.
Multiply both numbers by 2 to get your answer:
5/6 = 10/12
Answer:
the answer would be 9 so option B
If it's a regular octahedron, then you can calculate it using the formula
where
is the length of the edge.
If it's not regular, you have to calculate the area of each side individually.
One foot = 0.3048 meters
so 60 feet = 0.3048 * 60 = 18.29 meters to nearest 1/100