The table gives the distances travelled to school, in km, of the population of children in a particular region of the United Kingdom.

A histogram of this data was drawn with distance along the horizontal axis. A bar of horizontal width 1.5 cm and height 5.7 cm represented the 0-1 km group. Find the widths and heights, in cm to one decimal place, of the bars representing the following groups: a 2-3, b 5-10.AppendixLO1

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Distance, km 0-1 1-2 2-3 3-5 5-10 10 and over Number 2565 1784 1170 756 630 135