To find the surface area of a rectangular prism, you need to calculate the area of each face and then add them together.
The textbook has a length of 2 inches, a width of 14 inches, and a height of 9 inches.
The area of the top and bottom faces can be found by multiplying the length by the width: 2 in. × 14 in. = 28 in.²
The area of the front and back faces can be found by multiplying the length by the height: 2 in. × 9 in. = 18 in.²
The area of the left and right faces can be found by multiplying the width by the height: 14 in. × 9 in. = 126 in.²
To find the total surface area, add up the areas of all six faces: 28 in.² + 28 in.² + 18 in.² + 18 in.² + 126 in.² + 126 in.² = 344 in.²
Therefore, the correct answer is 344 in.².
Find the surface area of a textbook that is 2 in. × 14 in. × 9 in.(1 point)
Responses
172 in.2
172 in. squared
344 in.2
344 in. squared
252 in.2
252 in. squared
50 in.2
1 answer
1 answer