Plssss help I will mark brainlist plsss

Answer:
D
Step-by-step explanation:
What you need to apply there is basically 3D Pythagoras which goes like r=
[tex] \sqrt{23 { }^{2} + 10 { }^{2} + 15 {}^{2} } [/tex]
then punching on the calculator, the answer will be 29. 22 in
Answer:
D 29.2 I am pretty sure that is the right one so if it not sorry