There are 320 rods in a mile, what part of a mile is 1 rod?
2 answers:
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Answer:
37080
Step-by-step explanation:
To solve this problem we need to use proportions:
We don't know the total population in Rookery A but we know that 6334 of the total were tagged. Later, from a sample of 1200 pups, 205 were previously tagged.
The proportions we get are:
where p is the total population.
Now we will solve the proportion for p:
Therefore the total number of fur seal pups is 37077 ≈ 37080
The surface area of hemisphere is given by:
Where r is radius of hemisphere.
We are given diameter = 250 ft.
We know that radius = half of diameter.
Radius of dome = 1/2 (250) = 125 ft.
Now let us plug the value of radius in the formula,
Surface Area of dome = 98125 square foot.