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Because you might have to measure a cylider, such as the capacity of fluid oz's in a can of soda and maybe you have a room and it's shaped as a circle u might wanna find how much carpet u need...? sorry, im not sure if I'm helping! :( I covered area 3 years ago!!
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∙ 15y ago
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What is the formula of finding the area of a circle?
Pi * R squared, where R is the radius of the circle in question
How do you find the circumfrence of a circle when you have the area?
Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.
Why does the formula for area of a circle work?
It says so in the formula
Do you round your answer when you find the area of a circle?
You would have to round since area will not be able to be represented without rounding.
How many square inches are there in a 1 inch circle?
Assuming that 1inch is your diameter, your radius is, of course, 0.5. Since the area of a circle is expressed asA=(pi)r2simply plug in the radius to this equation. You will get your area to be pi*0.25in2, which is roughly equal to 0.78539inches2.
Why it is so important to know the area of a circle?
Knowing the area of a circle which is pi times radius squared will help you to find other properties of the circle
Formulas of area in a circle?
If you know the circle's Radius, the area is [ pi times r2 ]. If you know the circle's Diameter, the area is [ 1/4 pi D2 ].
How do you fund the circumference of circle when you know the area?
You dived the area by the circumference of the circle.
When you know the radius of a circle how can you find the area?
Area of a circle = pi*radius2
How do you convert area of circle if you know the circumference?
It depends on what you want to convert the area of the circle into.
What is the diameter of a circle with an area of 100πmm3?
I do not know about a circle with an area of 100 nmm3.A circle with an area of 100 mm2 has a diameter of 11.28 mm.
Why was pi found?
I did not know it was lost! It is very important for the calculation of the area of a circle and such calculations were important to the ancient geometers (people who measured land/earth).
Why is it important to know the difference between diameter and radius?
When you are using mathematical formulas, it is good to know the difference. For example finding the circumference or area of a circle.
How do you work out the difference of the area of a circle and the area of a square when the radius of the circle is 6cm and the side of length of the square is 12cm?
Do you know how to find the area of a circle when you know the radius ? Good! Do that. Do you know how to find the area of a square when you know the length of the side ? Good! Do that. Now you have two numbers ... the area of the circle and the area of the square. The problem wants you to find the difference of these two numbers. Do you know how to use subtraction to find the difference of two numbers ? Good! Do that.
Can the radius of a circle be found if you only have a piece of the circle?
If you have the area of the piece and you know how much the piece takes up. For example if you have a piece of a circle and you know it is 1/4 if the circle then you take the area and multiply by 4.
How do you find the radius of the circle if you know the area?
Area of a circle equals pi r2 Therefore the radius of a circle equals the square root of (area divided by pi).
How do you figure the area of a circle if you know the diameter?
The formula for the area of a circle is: area = pi x radius2. The radius is half the diameter.
