Calculate the volume of the rectangular prism than calculate the volume of the triangular prism
<span>It's easy enough. Solving looks like that: p(roll of 8)+p(roll of 12) =</span>

Hope everything is clear.
Answer:
x^2 y^12
Step-by-step explanation:
( x ^ 1/2 * y ^3 ) ^ 4
A power raised to a power has the exponents multiplied
a^b^c = a^ (b*c)
x^ 1/2 ^ 4 * y^3^4
x^(1/2*4) * y^(3*4)
x^2 y^12
10+11+3
21+3
24
24/6
The mean is 4