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in Mathematics by (33.0k points)

Two poles of heights 6m and 11m stand vertically on a plane ground. If the distance between their feet is 12m, find the distance between their tops. 

(a) 12m (b) 13m (c) 14m (d) 15m

1 Answer

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Best answer

(b)13 m

Let the poles be and CD 

It is given that: 

AB = 6 m and CD = 11 m 

Let AC be 12 m 

Draw a perpendicular farm Bon CD, meeting CD at E

Then, 

BE = 12 m 

We have to find BD. 

Applying Pythagoras theorem in right-angled triangle BED, we have:

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