Find the surface area of a textbook that is 2 in. × 14 in. × 9 in. (1 point)
Responses
344 in.2
344 in. squared
252 in.2
252 in. squared
172 in.2
172 in. squared
50 in.2
The surface area of a textbook that is 2 in. × 14 in. × 9 in. can be calculated by finding the sum of the areas of all six sides of the textbook.
The area of each side can be calculated using the formula: Area = length × width.
The top and bottom sides have dimensions of 2 in. × 9 in., so their combined area is: 2 in. × 9 in. = 18 in.2.
The front and back sides have dimensions of 14 in. × 9 in., so their combined area is: 14 in. × 9 in. = 126 in.2.
The left and right sides have dimensions of 2 in. × 14 in., so their combined area is: 2 in. × 14 in. = 28 in.2.
Adding up the areas of all six sides gives us: 18 in.2 + 18 in.2 + 126 in.2 + 126 in.2 + 28 in.2 + 28 in.2 = 344 in.2.
Therefore, the surface area of the textbook is 344 in.2.
Answer: 344 in.2