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What are some numbers that could describe the area of a circle?
Wiki User
∙ 11y ago
No numbers can describe the area of a circle.
However, any number with a square unit of some sort attached can, eg:
1 square units, 2 square units, 345,432 square units, 3,467,235 square units, 56 square miles, 27 acres, 22 square kilometres, 37 hectares, ...
Wiki User
∙ 11y ago
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What are the numbers for pir2?
Area of a circle = pi*radius2
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.
Describe the effect on the area of a circle when the radius is doubled?
the radius is from the center of the circle to the edge so that's how you find the radius.
Describe How you could estimate the area of a circle whose radius is 1 cm?
You do not need to estimate it. You can calculate it as being pi*r2 which, in this case is pi square cm.
What kind of unit does a circle have?
A circle can have a unit of length which could be either a measure of its diameter or radius, or of its circumference. Or the circle could have the unit of area.
What is 861?
There are many things that the numbers 816 could represent. The numbers could represent an area code for telephones numbers in a certain area of the United States.
How did the Romans work out the area of a circle?
The area of a circle is the number of square units inside that circle, if each square in the circle to the left has an area of 1cm2, you could count the total number of squares to get the area of this circle. However, it is easier to use one the following formulas; A=.r²or A=pi times r times r, where A is the area and r is the radius.
How can percents describe a change in area?
Divide the change by the initial number to get a fraction and multiply by 100% to get a percent. The percent you get will describe the change in area in the mathematical language of numbers.
What is the area of something in math?
well..... it could be the area of a circle and many other things (well shapes)
What is the exact area of a circle whos diameter is 6 cm?
There is no way to find the exact area of a circle. The formula for the area is Pi times the radius squared. But Pi is an irrational number -- that is, no matter how many numbers you write it out to, you could always write it further. Since there is no exact value of Pi there can be no exact value of the area based on the diameter. The radius is half that of a diameter. Therefore, if you know the diameter you know the radius. In this case the radius is 3cm and the area of the circle = pi * 32 So the answer is roughly
How do you find the area of a circle if the circle is 8cm?
Area of a circle = pi*radius2
How do you get an area for a circle?
Area of a circle = Pi * radius2
