Question
PSLE
Irene hung some identical rings vertically. The thickness of each ring was 1 cm. The figure shows how the rings are connected.
  1. What was the distance from the top of the 1st ring to the bottom of the 5th ring?
  2. The distance from the top of the 1st ring to the bottom of the last ring was 254 cm. How many rings did Irene hang altogether?
3 m
(a)

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(b)

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PSLE
Irene hung some identical rings vertically. The thickness of each ring was 1 cm. The figure shows how the rings are connected.
  1. What was the distance from the top of the 1st ring to the bottom of the 5th ring?
  2. The distance from the top of the 1st ring to the bottom of the last ring was 254 cm. How many rings did Irene hang altogether?