Question

A telephone exchange worker wants to give the telephone connection to Amutha's house. Figure below shows all the possibilities of cable connections. Find the length of the route which requires minimum cable?

• A. 7 m
• B. 8 m
• C. 9 m
• D. 6 m

Answer 1

The correct option is A 7 m


Distance from A to D
= 7 m

Distance from A to D (via B)
= 4+5 = 9 m

Distance from A to D (via C)
= 2+6 = 8 m

Therefore, the route directly from A to D requires minimum cable of length 7 meter.