Question

Part B
Use the distance formula to find BC. Show your work.

Answer 1

• 5 units

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Use coordinates of endpoints, taken from the diagram, B(6, 2) and C(2, - 1) and the distance formula:

• 
  `d=√((x_2-x_1)^2+(y_2-y_1)^2)`

Substitute BC for d and given coordinates to find the radius:

• 
  `BC=√((2-6)^2+(-1-2)^2) =√(16+9) =√(25) =5`

Hence the segment BC is 5 units long.