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the radius of circle is 2.12metre . its area according to the rule of significant figures in the measurement |
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Answer» Answer: The required area of the CIRCLE would be 4.4944π. If the value of pi(π) is taken as 3.14 the EXACT area of the circle would be 14.1 m². Explanation: We have been given that radius of circle 2.12 m.We have to FIND the area of circle ACCORDING to the rule of significant figures.
The formula for area of a circle is given by = pi(π)*radius (r)² In this given question, the radius (r) is given as 2.12 m. THEREFORE, the area of circle would can be calculated as follows: = π*r² units Area of Circle = πr² units Area of Circle = π(2.12)² m² Area of Circle = 4.4944π m² If the value of π is taken as 3.14 the exact area of the circle would be: = 4.4944 * 3.14 m² = 14.11 m² If we find the area of circle in the form of Significant figures, the exact area of the circle would be: = 14.1 m² Therefore, The required area of the circle is 14.1 m². |
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