Question

What is the le ght of side ab round your answer to the nearest tenth

Answer 1

Given

Find

The length of AB

Step-by-step explanation

We find the length of AB using the distance formula.

`d=\sqrt{(x_(2-)x_1)^2+(y_2-y_1)^2}`

with

`(x_1,y_1)=A(1,5),(x_2,y_2)=B(3,1)`

the length of AB =

`\begin{gathered} AB=√((3-1)^2+(1-5)^2) \\ AB=√(2^2+(-4)^2) \\ AB=√(4+16) \\ AB=√(20) \\ AB=4.47213595 \end{gathered}`

Final Answer

The length of AB = 4.5