Answer:
125.66 in. ³
Step-by-step explanation:
2 × π × r × h + 2 × π × r²
We only know the length of the diameter, but we have to find the radius. So we divide by 2 because the radius is half the diameter.
4 ÷ 2 = 2
So r = 2.
h = 8
2 × π × r × h
2 × 3.14 × 2 × 8 = 100.48
2 × π × r²
2 × 3.14 × 2²
2 × 3.14 × 4 = 25.12
Now add them up.
100.48 + 25.12 = 125.66
Hope this helps... :)
