Respuesta :

10 feet
Mark brainliest
taylor11152

Answer: 9

Step-by-step explanation:

super easy

basically do 15-5 which is 10

thats the hypotenuse side

now apply pythegorean theorem: 5 squared + x squared= 10 squared

25+ x squared=100

x squared=75

x approxiametly equals 9

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