Two poles are ,18 cm and 13 cm high ,stand upright in a playground .If their feet are 12 m apart ,find the distance betweeen their tops.

Let AD and CE are two poles of height 18 cm and 13 cm respectively.

And, distance between these two poles (DE) = 12 m = 12100 = 1200 cm

Now, 

BD = CD = 13 cm

So, AB = AD - BD = 18 - 13 = 5 cm

Hence, distance between their tops is 1200 cm.

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