To find the surface area of a rectangular prism, we need to calculate the area of each face and then add them up.
The net of a rectangular prism consists of 6 faces: 2 rectangles with dimensions 7 inches by 3 inches, 2 rectangles with dimensions 7 inches by 11 inches, and 2 rectangles with dimensions 3 inches by 11 inches.
Calculating the area of each face:
1. Face with dimensions 7 inches by 3 inches: area = 7 inches x 3 inches = 21 square inches
2. Face with dimensions 7 inches by 11 inches: area = 7 inches x 11 inches = 77 square inches
3. Face with dimensions 3 inches by 11 inches: area = 3 inches x 11 inches = 33 square inches
Adding up the areas of all 6 faces:
21 + 21 + 77 + 77 + 33 + 33 = 262 square inches
Therefore, the surface area of the rectangular prism is 262 square inches.
Apply the technique of using nets. What is the surface of the rectangular prism whose dimensions measure 7 inches by 3 inches by 11 inches? (1 point)
1 answer