Asix foot man is standing 10 feet away from a 20 foot lamppost. what is the length of his shadow?

4.29 feet ( approx )

Step-by-step explanation:

Let x be the length of the shadow of man,

Given,

The height of the man = 6 feet,

The height of the lamppost = 20 foot,

Distance of the man from the lampost = 10 feet,

By making the diagram,

We found two similar triangles in which first triangle having sides 6 and x,

Second triangle having sides 20 and x + 10,

∵ The corresponding sides of similar triangle are in same proportion,

Hence, the length of the shadow is approximately 4.29 feet.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

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answer: d.) the total number of protons and neutrons is 15

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