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ITMC 2018 Grade 8 National Preliminary set01 Question 18

ITMC · ITMC 2018 Grade 8 National Preliminary set01

Question 18

A square has circumradius $R$ and inradius $r$. Which statement is true?
  1. $0.5r\le R\le r$
  2. $r\le R\le1.5r$
  3. $1.5r\le R\le2r$
  4. $2r\le R\le2.5r$
  5. Insufficient information.