A bacterial colony has a diameter of 16 mm.Calculate its cross-sectional area in mm2:_____ mm2Use the maths keyboard to write your answer in standard form and to three significant figures.I DON'T KNOWSUBMIT ANSWER
Question
A bacterial colony has a diameter of 16 mm.Calculate its cross-sectional area in mm2:_____ mm2Use the maths keyboard to write your answer in standard form and to three significant figures.I DON'T KNOWSUBMIT ANSWER
Solution
The cross-sectional area of a circle (which is the shape of the bacterial colony) can be calculated using the formula:
Area = πr²
where r is the radius of the circle. The radius is half of the diameter, so in this case, r = 16 mm / 2 = 8 mm.
Substituting the value of r into the formula gives:
Area = π(8 mm)² = 64π mm²
This is approximately 201.06 mm² to three significant figures.
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