Assuming 5a3 equals 5a^3, and the same for everything else, you would plug in 4 for a, so 5(4)^3 - 2(4)^2 + 4 - 45, which equals 247.
Answer:
Step-by-step explanation:
Area=πr²
area= π(12)²
area=452.4cm²
A.
minus 15
times the bottom by the right hand side
