Question

Two pole 15 m and 30 m height are standing straight on the ground . if their feet are 36 metre apart ,find the distance between their top.

93m

39m

36m

38m

None of these

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Answer 1

Answer:

Two poles, 15 m and 30 m high, are standing straight on the ground. If they’re bases are 36 m apart, find the distance between their tops.

This is a simple triangle equation.

As shown in the picture (not to scale), the poles form a right triangle, with the two leg sides 36 m and 15 m.

Using the Pythagorean Theorem (a^2 + b^2 = c^2), we can solve for x.

36^2 + 15^2 = x^2

1296 + 225 = x^2

1521 = x^2

x = 39 m

Also, if you have a knowledge of Pythagorean Triples, you could discern that his triangle contained multiples of the 5, 12, 13 triangle.