Surface Area of a Cylinder

The video tutorial explains how to calculate the surface area of a cylinder by breaking it down into its net components: two circles and a rectangle. It covers the formulas for the area of a circle (pi r squared) and the rectangle (pi times diameter times height). The tutorial walks through the calculation process step-by-step, including converting diameter to radius and using a calculator for precise results. Finally, it demonstrates how to round the final surface area to three significant figures.

What shapes make up the net of a cylinder?

• Two circles and a rectangle

• Three rectangles

• One circle and two rectangles

• Two squares and a rectangle

What is the formula for the area of a circle?

• 2πr

• 2πr²

• πr²

• πd

How is the length of the rectangle in the cylinder's net determined?

• It is equal to the circumference of the circle

• It is equal to the diameter of the circle

• It is equal to the radius of the circle

• It is equal to the height of the cylinder

What is the radius of the circle if the diameter is 12?

• 3

• 6

• 12

• 24

What is the final surface area of the cylinder rounded to three significant figures?

• 1730 cm²

• 1740 cm²

• 1720 cm²

• 1734 cm²