Hey there!!
The area for the volume of a cube -
s³ , s = side
volume = 216
s³ = 216
s = ∛216
s = 6
The required answer is 6
Hope my answer helps!
1. Note that the number 1.8 consists of two parts 1 and 0.8.
2. The decimal 0.8 can be written as the fraction 
3. Add these two numbers:

4. Since 18=2·3·3 and 10=2·5, the fraction
can be simplified to the rational number

Answer:
Maryellen would be 15, because if her mother is twice that plus 8 that would make her 38. Then, if Maryellen's dad is 3 years older than the mom that means he is 41. Add all the ages, 94.
Step-by-step explanation: