It's very important to know how to calculate the area formula for a circle? Dear, Mensuration learners. Here we're discussing this specific topic with all formulas and solved the question, explanation and concept,
What is a Circle?
A set of connected dots are all equidistant from another dot situated in the centre. For brief information, you can visit the Circle Concept.Area formula
To calculate area, You need to remember some formulas according to the information in the question. And then, you can use a specific formula to solve the problems.General Formulaπr²π is the sign of Pi and its value in fractional 22/7 and in a decimal number→ 3.141592654.. And the r is the radius of the circle. Please note that the radius is half of the diameter length.
Circumference to area calculation =C²/4π
Here, 'C' is the Circumference, and π is the sign of Pi.
The area calculation from the Diameter value of a circle
The Diameter is the longest line, touching the centre and two outer dots. The formula is πr². Where 'r' is the radius, it means half of the Diameter. In a certain question, if you got a Diameter or radius, you can easily calculate the area using the above formula.
The Diameter is the longest line, touching the centre and two outer dots. The formula is πr². Where 'r' is the radius, it means half of the Diameter. In a certain question, if you got a Diameter or radius, you can easily calculate the area using the above formula.
Solved problems
Area Difference
When you find a different area between two circles, the following information is known. then
When you know Radius: By knowing the radius length of two circles, it became easier to know the difference in the area between them. Just apply the following formula.
π(r1²-r2²).
You have another option to find the answer by separate calculation and finally subtract the area from bigger to smaller. But it is a few steps to do. If you are unclear about this formula, let me clarify the actual concept.
We have taken π as common from two different two circles. But r is not common, and it has different values. So, we subtract from each other just to find the difference in area between the two. Please note that we are not calculating the area, only calculating the difference in the rea.
When you find a different area between two circles, the following information is known. then
When you know Radius: By knowing the radius length of two circles, it became easier to know the difference in the area between them. Just apply the following formula.
π(r1²-r2²).
You have another option to find the answer by separate calculation and finally subtract the area from bigger to smaller. But it is a few steps to do. If you are unclear about this formula, let me clarify the actual concept.
We have taken π as common from two different two circles. But r is not common, and it has different values. So, we subtract from each other just to find the difference in area between the two. Please note that we are not calculating the area, only calculating the difference in the rea.
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