The total surface area of a rectangular prism with dimensions length (L) = 5, breadth (B) = 4, and height (H) = 3 is 94 square units, calculated using the formula
.
To find the total surface area of a rectangular prism, you need to calculate the areas of all six faces and then sum them up.
For a rectangular prism with length L, breadth B, and height H, the surface area
is given by the formula:
![\[ A_{\text{total}} = 2(LB + BH + HL) \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/e17wpw69r3s7uo0r9qsfugvoeg7vi8wnww.png)
Given the values for your rectangular prism (length = 5, breadth = 4, height = 3), plug them into the formula:
![\[ A_{\text{total}} = 2(5 * 4 + 4 * 3 + 3 * 5) \]\[ A_{\text{total}} = 2(20 + 12 + 15) \]\[ A_{\text{total}} = 2 * 47 \]\[ A_{\text{total}} = 94 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/zg1bnb3otkqxjv1ru3ljzj0sgb5w6my6g9.png)
Therefore, the total surface area of the prism is 94 square units.