Surface Area of Cylinders

Front

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

Back

Total Surface Area = 2πr² + 2πrh, where r is the radius and h is the height.

Front

What does the term 'lateral surface area' refer to in a cylinder?

Back

Lateral surface area is the area of the curved surface of the cylinder, excluding the top and bottom.

Front

How do you calculate the lateral surface area of a cylinder?

Back

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

Front

What is the area of a circle with a radius of 4 cm?

Back

Area = πr² = π(4)² = 16π ≈ 50.27 cm².

Front

If a cylinder has a radius of 5 inches and a height of 10 inches, what is its total surface area?

Back

Total Surface Area = 2π(5)² + 2π(5)(10) = 50π + 100π = 150π ≈ 471.24 in².

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × Radius.

Front

What is the value of π (pi) approximately?

Back

π ≈ 3.14.

Front

What is the surface area of a cylinder with a radius of 3 m and a height of 7 m?

Back

Total Surface Area = 2π(3)² + 2π(3)(7) = 18π + 42π = 60π ≈ 188.5 m².

Front

What is the difference between surface area and volume?

Back

Surface area measures the total area that the surface of an object occupies, while volume measures the amount of space inside the object.

Front

How do you find the radius if you know the diameter?

Back

Radius = Diameter / 2.