Surface Area of Cubes and Rectangular Prisms

Front

What is the formula for finding 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 a side length of 4 cm?

Back

Surface Area = 6s² = 6(4 cm)² = 96 cm².

Front

What do we call the flat shapes that make up the surface of a 3D object?

Back

Faces.

Front

How do you calculate the surface area of a cylinder?

Back

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

Front

What is a net in geometry?

Back

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

Front

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

Back

Surface Area = 2(3*4 + 3*5 + 4*5) = 2(12 + 15 + 20) = 2(47) = 94 cm².

Front

What is the total surface area of a cube with a side length of 2 m?

Back

Surface Area = 6s² = 6(2 m)² = 24 m².

Front

What is the difference between surface area and volume?

Back

Surface area measures the total area of the surface of a 3D object, while volume measures the amount of space inside the object.

Front

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

Back

Surface Area = (Base Area) + (Lateral Area), where Lateral Area = perimeter of base * height.

Front

What is the surface area of a rectangular prism with a length of 10 cm, width of 5 cm, and height of 2 cm?

Back

Surface Area = 2(10*5 + 10*2 + 5*2) = 2(50 + 20 + 10) = 2(80) = 160 cm².