Based on the depth of the dolphin and the height of the coast guard helicopter, the distance between the dolphin and the helicopter is 102¹/₄ feet .
<h3>What is the distance?</h3>
The dolphin is below the surface of the ocean while the coast guard helicopter is above the surface of the water.
The distance between them is therefore:
= Height of coast guard helicopter - Depth of dolphin
The depth will be a negative number because it is below the surface:
= 78¹/₂ - (-23³/₄)
= 78¹/₂ + 23³/₄
= 102¹/₄ feet
In conclusion, the distance between the dolphin and the helicopter is 102¹/₄ feet .
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