Question

A storage drum in the shape of a cylinder is 3 feet tall and has a diameter of 4 feet. What is the total surface area of the storage drum? Use 3.14 for Pi and round the answer to the nearest tenth. Recall the formula S A = 2 pi r squared + 2 pi r h. 20.0 37.7 50.2 62.8

Answer 1

Step-by-step explanation:

Step 1:  Find the surface area

$Radius = Diameter /2$

$Radius = 4/2$

$Radius = 2$

$Surface \ Area = 2\pi * r * h +2 \pi * r^2$

$Surface \ Area = 2\pi * (2) * (3) + 2\pi * (2)^2$

$Surface \ Area = 2\pi * 6 + 2\pi * 4$

$Surface \ Area = 12\pi + 8 \pi$

$Surface \ Area = 20\pi$

$Surface\ Area = 62.8...$

Answer:  Option D, 62.8

Answer 2

Answer:

62.8 ft^2

Step-by-step explanation:

radius = 2 ft (since diameter = 4 ft, and radius = 1/2 * diameter)

height = 3 ft (given)

surface area = (2 * 3.14 * 2 * 3) + (2 * 3.14 * 2 * 2)

= (37.68) + (25.12)

= 62.80 ft^2

Hope this helps!