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# Lesson 3 Homework Practice Surface Area Of Rectangular Prisms Answers [CRACKED]

## Lesson 3 Homework Practice Surface Area Of Rectangular Prisms Answers

If you are looking for a way to practice finding the surface area of rectangular prisms, you have come to the right place. In this article, we will show you how to use the formula for surface area of rectangular prisms, how to match 3-dimensional figures to their nets, and how to calculate the surface area of different examples. We will also provide you with an answer key for each problem, so you can check your work and learn from your mistakes.

## What is the Formula for Surface Area of Rectangular Prisms?

A rectangular prism is a 3-dimensional shape that has six rectangular faces. The surface area of a rectangular prism is the total area of all its faces. To find the surface area of a rectangular prism, we need to know the length, width, and height of the prism. The formula for surface area of rectangular prisms is:

Surface Area = 2(lw + lh + wh)

where l is the length, w is the width, and h is the height of the prism.

## How to Match 3-Dimensional Figures to Their Nets?

A net is a 2-dimensional representation of a 3-dimensional figure that can be folded to form the figure. To match a 3-dimensional figure to its net, we need to imagine unfolding the figure and laying it flat on a plane. For example, the net of a rectangular prism consists of six rectangles that are arranged in a certain way. Here is an example of a rectangular prism and its net:

To match a net to a 3-dimensional figure, we need to do the opposite: imagine folding the net along its edges and forming the figure. For example, here is a net that can be folded to form a rectangular prism:

## How to Calculate the Surface Area of Rectangular Prisms?

To calculate the surface area of rectangular prisms, we need to apply the formula for surface area of rectangular prisms using the given dimensions of the prism. Here are some examples of how to do that:

• Find the surface area of this rectangular prism:

• Solution:We can use the formula for surface area of rectangular prisms:Surface Area = 2(lw + lh + wh)Plug in the given values:Surface Area = 2(5 x 2 + 5 x 3 + 2 x 3)Simplify:Surface Area = 2(10 + 15 + 6)Surface Area = 2(31)Surface Area = 62 cm

• Find the surface area of this rectangular prism:

Solution:We can use the formula for surface area of rectangular prisms:Surface Area = 2(lw + lh + wh)Plug in the given values:Surface Area = 2(8.4 x 3.3 + 8.4 x 6.1 + c481cea774