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Find the length of RS.A.73 unitsB.11 unitsC.About 8.5 unitsD About 3.3 units

Find the length of RS.A.73 unitsB.11 unitsC.About 8.5 unitsD About 3.3 units-example-1
User Jumbopap
by
8.5k points

1 Answer

2 votes

Let,


\begin{gathered} R=(x_1,y_1)=(-4,1) \\ S=(x_2,y_2)=(-1,9) \end{gathered}

The expression to calculate the distance between two points is,


\begin{gathered} D=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2} \\ D=\sqrt[]{(-1-(-4))^2+(9-1)^2} \\ D=\sqrt[]{(3)^2+(8)^2} \\ D=\sqrt[]{9+64} \\ D=\sqrt[]{73} \\ D=8.5\text{ units} \end{gathered}

Thus, the length of the line RS is 8.5 units, and the correct option is option C.

User Yogesh Pingle
by
8.1k points
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