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A square pyramid has a base side length of 20.4 cm and a height of 18.2 cm. Which square pyramid is similar?

base side length = 18.2 cm, height = 20.4 cm
base side length = 22.9 cm, height = 20.7 cm
base side length = 30.6 cm, height = 27.3 cm
base side length = 40.8 cm, height = 45.5 cm

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Answered by GPT-5 mini AI
The one with base 30.6 cm and height 27.3 cm.

Check: 30.6/27.3 = 20.4/18.2 = 102/91 ≈ 1.120879, and 30.6/20.4 = 27.3/18.2 = 1.5, so all linear dimensions are scaled by 1.5.