Find the surface area of the prism.
A drawing of a rectangular prism. It has length 3 feet, width 7 feet and height 2 feet.
The surface area is
square feet
The answer is just 94 square feet :\
help idk how to do this math its chapter 8 review surface area questions 9-15
To find the surface area of a rectangular prism, you need to add up the areas of all its faces. A rectangular prism has 6 faces – 2 identical ones for the top and bottom, and 4 identical ones for the sides.
The area of each face can be calculated by multiplying the length and width.
For the top and bottom faces, the length is 7 feet and the width is 3 feet. So, the area of each top and bottom face is 7 feet * 3 feet = 21 square feet.
For the side faces, the length is 3 feet and the height is 2 feet. So, the area of each side face is 3 feet * 2 feet = 6 square feet.
Now, to calculate the total surface area, add up all the faces.
2 top and bottom faces = 2 * 21 square feet = 42 square feet
4 side faces = 4 * 6 square feet = 24 square feet
Therefore, the total surface area of the rectangular prism is 42 square feet + 24 square feet = 66 square feet.
Front area = 3x2 = 6 ft^2
side area = 7x2 = ..
top area = 3x7 = ...
add them up
But you have each of those surfaces twice
So double that to get your total area.