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World 3 · Surface Area · 8 min · PRO

The area of a sphere

Archimedes and the label

PRO · Shape Lab

World 3: Surface Area is part of PRO

The first world of Shape Lab is free. PRO opens the other 14 lessons in 4 worlds — simulations, quizzes and all.

  • The area of a box
  • Unrolling a cylinder
  • Unrolling a cone
  • Counting cubes
  • Prisms, cylinders and leaning stacks
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  • All 26 labs — every world, every lesson
  • Practice exams and certificates

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