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artcher [175]
3 years ago
12

A circular Petri dish has a diameter of 10 centimeters. If the dish contains 2,450 bacteria, what is the population density of b

acteria in the fish?
(1) 31 bacteria per square centimeter
(2) 42 bacteria per square centimeter
(3) 48 bacteria per square centimeter
(4) 51 bacteria per square centimeter
Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0
Density=population/area circle, radius=10/2=5 cm
Density=population/(πr²)=2450/(π*5²)≈31
<span>(1) 31 bacteria per square centimeter</span>

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