SURFACE AREA OF CYLINDERS

Front

What is the formula for the lateral surface area of a cylinder?

Back

Lateral Surface Area = 2πrh, where r is the radius and h is the height.

Front

How do you find the radius of a cylinder if you know the diameter?

Back

The radius is half of the diameter. (r = d/2)

Front

What is the total surface area of a cylinder?

Back

Total Surface Area = 2πr(h + r), where r is the radius and h is the height.

Front

If the diameter of a cylinder is 18 ft, what is the radius?

Back

The radius is 9 ft.

Front

What is the lateral surface area of a cylinder with a height of 7.6 cm and a diameter of 5.8 cm?

Back

Lateral Surface Area = 2π(2.9)(7.6) ≈ 138.5 cm².

Front

What is the total surface area of a cylinder with a radius of 5 cm and a height of 10 cm?

Back

Total Surface Area = 2π(5)(10 + 5) = 471.2 cm².

Front

What units are used to measure surface area?

Back

Surface area is measured in square units, such as cm², m², in², etc.

Front

What is the relationship between the radius and diameter of a cylinder?

Back

The radius is one-half of the diameter.

Front

How do you round a number to the nearest tenth?

Back

Look at the hundredths place; if it's 5 or more, round up.

Front

What is the lateral surface area of a cylinder with a radius of 4 cm and height of 10 cm?

Back

Lateral Surface Area = 2π(4)(10) ≈ 251.3 cm².