Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
Based on the calculations, the approximate area covered by the reservoir is equal to 0.28 km².
<h3>What is the area of a circle?</h3>
The area of a circle simply refers to the space occupied or the region enclosed by a circle within its boundary, and in a two-dimensional plane.
<h3>How to calculate the area of a circle?</h3>
Mathematically, the area of a circle is calculated by using this formula:
Area = πr²
<u>Where:</u>
r is the radius of a circle.
<u>Given the following data:</u>
Diameter of circle = 0.6 kilometer.
π = 3.14.
Radius = 0.6/2 = 0.3 km.
Substituting the given parameters into the formula, we have;
Area = π × 0.3²
Area = 3.14 × 0.09
Area = 0.28 km².
Read more on circle here: brainly.com/question/14478195
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It's had been built about since 1958.
Answer:
Weather is the state of the atmosphere averaged over time at some place.
The correct answer is <u>(c)</u>.
