Problem 8 · 2018 Math Kangaroo
Medium
Geometry & Measurement
spatial-reasoning
A figure is made up of three squares. The side length of the smallest square is 6 cm. How long is the side length of the biggest square?
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Answer: C — 12 cm
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Hint 1 of 2
Use the marked 2 cm step to relate each square's side to the next.
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Hint 2 of 2
Build up from the smallest side of 6 cm, adding the step sizes the figure shows, to reach the biggest square.
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Approach: read side lengths off the stepped figure
- The smallest square has side 6 cm.
- The figure's marked 2 cm steps show how much longer each next square's side is than the one before.
- Adding those steps up from 6 cm reaches the largest square's side of 12 cm.
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