Question

A boy was flying a kite which was at a height of 40 m just above a tree. The string was 50m long. How far was the boy from the tree?​

Answer 1

The 50 m string is the hypotenuse of a right triangle.

a%5E2+%2B+b%5E2+=+c%5E2

40%5E2+%2B+d%5E2+=+50%5E2

d%5E2+=+900

d = 30 meters