Answer:
25
Step-by-step explanation:
distance between two points is
d=√((x2-x1)^2+(y2-y1)^2)
in this case x2=-15 ,x1=0,y2=20,y1=0
so
d=√((-15-0)^2+(20-0)^2)
d=√(15^2+20^2)
d=√(225+400)
d=√625
d=25
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