What is the value of x?

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x =

8

Step-by-step explanation:

Pythagoras theorem states a²+b²=c²

In this example c² is given to us (10) and a² is given to us (6)

To work out x we have to √10²-6² which is 8

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

the square root of what number? if you add that, then someone will probably answer the question.