D. from my experience.<span />
Answer:
x+12
Step-by-step explanation:
Answer:
Step-by-step explanation:
Cylinder of radius r and height h:
Lateral area = 2πrh
Area of end face = πr²
Surface area = 2πrh + 2πr²
Volume = πr²h
Cone of base radius r and height h:
Slant height L = √(r²+h²)
Lateral area = πrL
Base area = πr²
Surface area = πrL + πr²
Volume = πr²h/3
Number 3 is the correct answer
Tell me if you want further explanation