exam Maths Puzzle Numerical Ability

i am confused on how to get the answers...do they have more than one answer each?

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exam Other Question

from a 100 foot roof of a building on the coast, a tourist sights a ship. the angle of depression is 2.5 degrees. how far is the ship from the shoreline?
i put x/100 = tan 2.5 degress than cross multiplied and got 4.4 feet. id that right? In guinea pigs, rough coat (R) is dominant over smooth coat (r), and black coat (B) is dominant over white (b). A rough, black guinea pig bred to a smooth, white one yielded 28 rou