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It says that the answer has to be a decimal and I don't understand

It says that the answer has to be a decimal and I don't understand-example-1
User DReJ
by
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1 Answer

3 votes

To get the distance between two points, we can use the formula given below


\text{distance betwe}en\text{ points = }\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}

From the question given, we were given the coordinates of points C and D to be


\begin{gathered} C\text{ = (-2, 13)} \\ D\text{ = (-18, -1)} \end{gathered}

we can put x1 = -2 and y1 = 13

and x2 = -18, y2 = -1


\sqrt[]{(-18_{}-(-2)_{})^2+(-1-13_{})^2}


\begin{gathered} \sqrt[]{(-16)^2+(-14_{})^2} \\ \\ \Rightarrow\text{ }\sqrt[]{256\text{ + 196}} \\ \\ \Rightarrow\sqrt[]{452} \end{gathered}


\sqrt[]{452}\text{ = 21.26}

The distance between points C and D = 21.26

=> 21.3 (To one decimal number)

User Berthony
by
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