Question

.Two poles 15 cm and 30 cm high are standing straight on the ground . If their feet are 36 cm apart.

Find the distance between their tops.​

Answer 1

Answer:

height 30-15 , 15 distance between it's tops is 39 cm

Answer 2

Answer:

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Step-by-step explanation:

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 , we can solve for x.

 $36^{2}+15^{2}= x^{2} \\\\1296 + 225 = x^{2} \\\\1521 = x^{2} \\\\\sqrt{1521} = x\\\\x = 39\:\:cm$

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