Final answer:
The total surface area of a cuboid with dimensions 5, 2.3, and 7.5 is calculated using the formula 2(lw + lh + wh). Upon calculation, the surface area is found to be 132.5 square units. However, this does not match any of the given options a, b, c, or d.
Step-by-step explanation:
The question asks us to calculate the total surface area of a cuboid with dimensions 5 units, 2.3 units, and 7.5 units. To find the total surface area, we need to calculate the area of all six faces of the cuboid and sum them up. The formula for the surface area of a cuboid is 2(lw + lh + wh), where l is the length, w is the width, and h is the height of the cuboid.
Let's plug in the dimensions:
Surface area = 2(5 × 2.3 + 5 × 7.5 + 2.3 × 7.5)
Surface area = 2(11.5 + 37.5 + 17.25)
Surface area = 2(66.25)
Surface area = 132.5 square units.
However, the provided options do not include 132.5 square units, which suggests there may be a mistake in the calculation or the options. Therefore, none of the given choices (a, b, c, d) match our calculated answer.