Identifying Lateral & Total Surface Area

Front

What is the definition of surface area?

Back

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

Front

What is the difference between lateral surface area and total surface area?

Back

Lateral surface area refers to the area of the sides of a 3D shape, excluding the bases, while total surface area includes the area of the bases as well.

Front

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

Back

Lateral surface area = 2h(l + w), where h is the height, l is the length, and w is the width.

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

How many faces does a rectangular prism have?

Back

A rectangular prism has 6 faces.

Front

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

Back

Total surface area = 2lw + 2lh + 2wh, where l is length, w is width, and h is height.

Front

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

Back

Finding the surface area means calculating the total area of all the outer surfaces of the shape.

Front

If a rectangular prism has a length of 5 cm, width of 3 cm, and height of 2 cm, what is its total surface area?

Back

Total surface area = 2(5*3 + 5*2 + 3*2) = 62 cm².

Front

What is the lateral surface area of a cylinder?

Back

Lateral surface area = 2πrh, where r is the radius and h is the height.

Front

What does 'wrapping the outside of a 3-dimensional shape' refer to?

Back

It refers to calculating the surface area of the shape.