Answer:
The surface area is 88*pi square units.
Step-by-step explanation:
The surface area of a cylinder is given by two times the area of the base plus the area of the sides. This is given bellow:
surface area = 2*(base area) + (side area)
base area = pi*r²
base area = pi*(4)²
base area = pi*16 = 16*pi
side area = 2*pi*r*h
side area = 2*pi*4*7
side area = 8*7*pi
side area = 56*pi
surface area = 2*(16*pi) + 56*pi
surface area = 32*pi + 56*pi
surface area = 88*pi
The surface area is 88*pi square units.
Answer:
112π cubic units
Step-by-step explanation:
The volume of a cylinder is the area of the base × height.
The area of a circle is πr to the 2nd power
So the area of the base is π × 4 to the second power = 16π
The height of the cylinder is 7, so the volume is 16π × 7 = 112π cubic units
