A rectangular prism has dimensions 3 cm, 4 cm, and 5 cm. What is its surface area?

Fri, 17 Apr 2026 12:58:31 +0000

**What Is the Surface Area of a Rectangular Prism with Dimensions 3 cm, 4 cm, and 5 cm?** Curious about the surface area of a rectangular prism measuring 3 cm, 4 cm, and 5 cm? This simple yet fundamental question is gaining quiet interest across U.S. digital spaces, particularly among students, DIY enthusiasts, and design-focused audiences. As measurement precision becomes more accessible through mobile tools, users are increasingly turning to accurate calculations for everyday applications—from furniture building and packaging design to gaming and architectural planning. A rectangular prism, defined by three orthogonal edges, offers a clear example of how geometry applies to real-life dimensions. With lengths of 3 cm, 4 cm, and 5 cm, the surface area reflects the total area of all six faces: two each of length × width, width × height, and height × length. Understanding this calculation reveals not just the formula, but also why this basic shape matters in practical contexts. Calculating Surface Area: The Step-by-Step
To find the surface area, multiply all surface faces together using the formula:
2(lw + wh + hl)
Substituting 3 cm, 4 cm, and 5 cm in:
2[(3×4) + (4×5) + (5×3)] = 2[(12) + (20) + (15)] = 2[47] = 94 cm²
The total surface area of the rectangular prism is 94 square centimeters. This precise measurement supports accurate planning and material estimation, making it essential in construction, manufacturing, education, and digital design workflows.