Surface Area

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 calculate the surface area of a cube?

Back

The surface area of a cube is calculated using the formula: SA = 6a², where 'a' is the length of one side of the cube.

Front

What is the formula for the surface area of a rectangular prism?

Back

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

Front

How do you find the surface area of a cylinder?

Back

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

Front

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

Back

The surface area of a cone is calculated using the formula: SA = πr(r + l), where 'r' is the radius and 'l' is the slant height.

Front

How do you calculate the surface area of a sphere?

Back

The surface area of a sphere is calculated using the formula: SA = 4πr², where 'r' is the radius.

Front

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

Back

The surface area is 96 cm² (SA = 6a² = 6(4)² = 96).

Front

Find the surface area of a cylinder with a radius of 3 cm and a height of 5 cm.

Back

The surface area is 150.8 cm² (SA = 2πr(h + r) = 2π(3)(5 + 3) = 150.8).

Front

What is the surface area of a cone with a radius of 2 m and a slant height of 5 m?

Back

The surface area is 21.99 m² (SA = πr(r + l) = π(2)(2 + 5) = 21.99).

Front

How do you round surface area to the nearest hundredth?

Back

To round to the nearest hundredth, look at the third decimal place. If it's 5 or more, round up the second decimal place by one.