Exercise Answers: Module 26

Pyramids and Cones

  1. 1,280\text{ cm}^3
  2. 2.4\text{ million m}^3
  3. 544\text{ cm}^2; 80\overline{0}\text{ cm}^2
  4. 82,300\text{ m}^2; 135,000\text{ m}^2
  5. 314\text{ cm}^3
  6. 37.7\text{ ft}^3
  7. 47.1\text{ ft}^2; 75.4\text{ ft}^2
  8. 204\text{ cm}^2; 283\text{ cm}^2
  9. 37.6\text{ ft}^3 (the cylinder’s volume \approx29.45\text{ ft}^3 and the two hemispheres’ combined volume \approx8.18\text{ ft}^3)
  10. 37.6\text{ ft}^3\approx281.5\text{ gal}, which is more than 250\text{ gal}.

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