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7 pillars are used to hold a slant iron ...

7 pillars are used to hold a slant iron gudder as shown in the figure. If the distance between every two pillars is 1 m and height of the last piller is 10.5 m. Find the height of gudder.

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The correct Answer is:
1.5 m, 3m, 4.5m, 6m, 7.5, 9m
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