nets and surface area

Front

What is a net in geometry?

Back

A net is a two-dimensional shape that can be folded to form a three-dimensional figure.

Front

What is surface area?

Back

Surface area is the total area of the surface of a three-dimensional object.

Front

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

Back

Surface Area = 2(lw + lh + wh), where l = length, w = width, h = height.

Front

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

Back

Surface Area = 6 * (side length)^2 = 6 * (4 cm)^2 = 96 cm².

Front

What 3D shape does a square net create when folded?

Back

A cube.

Front

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

Back

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

Front

What is a triangular prism?

Back

A three-dimensional shape with two triangular bases and three rectangular faces.

Front

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

Back

Surface Area = (base area * 2) + (perimeter of base * height).

Front

What is the difference between a rectangular prism and a cube?

Back

A rectangular prism has different lengths, widths, and heights, while a cube has all sides equal.

Front

What is the surface area of a rectangular box with dimensions 2 in, 3 in, and 4 in?

Back

Surface Area = 2(2*3 + 2*4 + 3*4) = 2(6 + 8 + 12) = 52 in².