Question

Two similar triangles. The first triangle has a side length of 21 meters, which corresponds to the second triangle's side of 3 meters. The missing side of the first triangle corresponds to a side of 8 meters on the second triangle.

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How many meters long is the missing side?

Note: The triangles may not be drawn to scale.

Enter your answer as a number, like this: 42

Answer 1

x/8 = 21/3

x = 21/3 * 8

x = 56 m