Answer:
6/10
Step-by-step explanation:
Given :
Distance of bird from sea level,
.
Distance between fish and sea level,
.
To Find :
Distance between bird and fish.
Solution :
Distance between bird and fish is given by :

Therefore, distance between bird and fish is 8.958 feet.
Hence, this is the required solution.
First multiply, so 42 x 39, which equals 1,638, then estimate, round 42 to 40, and 39 to 40, and do 40 x 40 = 1,600 which is close to your answer, so good.