Answer:
9√2
Step-by-step explanation:
simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
Exact form:9√2
Decimal form: 12.72792206
First find the factors of 20
1 & 20
2 & 10
4 & 5
-1 & -20
-2 & -10
-4 & -5
Now find the pairs that have a difference of 1
-4 & -5
4 & 5
Step-by-step explanation:

-30b4 would be your answer.
Hope I helped!
A cube has 6 sides (like a dice)
if one side is 14 cm ^2
that means that we have to multiply it by 6
so 14 (cm 2) x 6 = 84cm 2