Answer:
35
Step-by-step explanation:
coordinate of point S(20,5) and R(-15,5)
Distance between S and R is given by,
[tex] \sqrt{ {(x2 - x1)}^{2} + {(y 2 - y1)}^{2} } \\ \sqrt{ {(20 - ( - 15))}^{2} + {(5 - 5)}^{2} } \\ \sqrt{ {(20 + 15)}^{2} + 0} \\ \sqrt{ {(35)}^{2} } = 35units[/tex]
