Surface Area of Prisms and Cylinders

Front

What is surface area?

Back

Surface area is the total area that the surface of a three-dimensional object occupies. It is measured in square units.

Front

How do you find the surface area of a rectangular prism?

Back

To find the surface area of a rectangular prism, use the formula: SA = 2(lw + lh + wh), where l is length, w is width, and h is height.

Front

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

Back

The surface area of a cylinder is given by the formula: SA = 2πr(h + r), where r is the radius and h is the height.

Front

What does it mean to find the surface area of a shape?

Back

Finding the surface area of a shape means calculating the total area that covers the outside of the shape.

Front

If a rectangular prism has dimensions 3 cm, 4 cm, and 5 cm, what is its surface area?

Back

The surface area is 94 cm².

Front

What is the significance of using 3.14 for pi in calculations?

Back

Using 3.14 for pi is a common approximation that simplifies calculations involving circles and cylinders.

Front

What is the surface area of a cylinder with a radius of 3 cm and a height of 5 cm?

Back

Using the formula SA = 2πr(h + r), the surface area is approximately 150.8 cm².

Front

What is the total surface area of a prism?

Back

The total surface area of a prism is the sum of the areas of all its faces.

Front

How do you round a number to the nearest tenths?

Back

To round a number to the nearest tenths, look at the hundredths place. If it is 5 or more, round up; if it is less than 5, round down.

Front

What is the surface area of a cube with a side length of 4 cm?

Back

The surface area is 96 cm², calculated using the formula SA = 6s², where s is the side length.