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Ratio

Ratio

TGM Original Questions
  1. The lengths of sides of three squares are in the ratio of $1 : 3 : 7$. Find
    1. the ratio of the perimeters of the three squares,
    2. the ratio of the areas of the three squares.
  2. The radii of three circles are in the ratio of $2 : 5 : 9$. Find
    1. the ratio of the perimeters of the three circles,
    2. the ratio of the areas of the three circles.
  3. The lengths of sides of three cubes are in the ratio of $1 : 2 : 3$. Find
    1. the ratio of the surface areas of the three cubes,
    2. the ratio of the volumes of the three cubes.

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Answer:(i)(a) \(1:3:7\) (i)(b) \(1:9:49\) (ii)(a) \(2:5:9\) (ii)(b) \(4:25:81\) (iii)(a) \(1:4:9\) (iii)(b) \(1:8:27\)

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