Two similar shapes have corresponding lengths in the ratio 1 : 2. The smaller has area 20 cm². The area of the larger is:

  1. 160 cm²
  2. 40 cm²
  3. 80 cm²
  4. 100 cm²
Answer

C) 80 cm²

Area ratio = 1 : 4, so the larger area is 20 4 = 80 cm². SLO M-09-B-17 · Understanding

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