Answer:
3000 m
Step-by-step explanation:
Using Pythagoras theorem

Similarly

Length of the Tunnel = |AB|+|BC|
=1999.9+999.7
=2999.6
=3000 m
Answer:
108
Step-by-step explanation:
Answer:k=0.67
Step-by-step explanation:
Answer:
24 in
Step-by-step explanation:
The diameter of a circle is twice its radius which is 12 * 2 = 24.