Answer:
Surface area = 298 ft^2
Explanation:
One of the formula we can use for surface area of a rectangular box is given by:
SA = 2lw + 2lh + 2wh, where
- SA is the surface area in square units,
- l is the length,
- w is the width (also known as breadth),
- and h is the height.
In the figure, the height is 7 ft, the length is 11 ft, and the width is 4ft. Thus, we plug in 7 for h, 11 for l, and 4 for w in the surface area formula to find the surface area of the rectangular box:
SA = 2(11 * 4) + 2(11 * 7) + 2(4 * 7)
SA = 2(44) + 2(77) + 2(28)
SA = 88 + 154 + 56
SA = 242 + 56
SA = 298
Thus, the surface area of the rectangular box is 298 square ft or 298 ft^2