Question

What is the surface area of this cylinder ?

Answer 1

Answer:

87.92 mm²

Step-by-step explanation:

Given:

• Radius of circular base: 2 millimeters
• Height of cylinder: 5 millimeters

It should be noted:

• Surface area of cylinder: 2πrh + 2πr²       (R = Radius; H = Height)

When the measures are substituted, we get the following expression:

• ⇒ 2π(2)(5) + 2π(2)²

Multiply the constants and substitute π as 3.14.

• ⇒ 20π + 2π(4)
• ⇒ 20π + 8π
• ⇒ 20(3.14) + 8(3.14)

Finally, simplify the expression to determine the surface area.

• ⇒ 20(3.14) + 8(3.14)
• ⇒ 62.8 + 25.12
• ⇒ 87.92 mm²