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MathNet 2021 — Part 08 Question 51

Math Olympiad Vault · MathNet 2021 — Part 08

Question 51

A right prism with square base has total surface area $128\,\mathrm m^2$ and height $6\,\mathrm m$. What is the length of its space diagonal?
  1. $D\approx8.23\,\mathrm m$
  2. $D\approx8.24\,\mathrm m$
  3. $D\approx7.22\,\mathrm m$
  4. $D\approx8.25\,\mathrm m$
  5. $D\approx7.21\,\mathrm m$