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Verified answer
Recall the equation A = pi * r^2.
You've given the information that A = 289 pi.
Now, simply solve the equation for r:
A = pi * r^2
289 pi = pi * r^2
289 = r^2
sqrt(289) = r
17 = r
Wiki User
∙ 13y ago
Anonymous
8.5
What is the radius of the area 345cm2?
Since area equals Pi times radius squared take and substitute what is known. 345 equals Pi times the radius squared. divide Pi into both sides for 109.8 equals the radius squared. Now take the square root of 109.8 to get an r of 10.47936 cm.
What is the circumference if the area is 379.94 cm square?
The first step is to work out the radius. The formula for area is pi(r2). That equals 379.94, so plug this into the equation and you get a radius of 10.997. The formula for the circumference is pi(2r). Plug the now known radius in and you get 69.097516968554117299881726353374 Therefore the circumference, if the area is 379.94cm2, will be 69.1cm
What happens to the area of the circle when the diameter is doubled?
As the area of a circle A equals pi times the radius squared, and doubling the diameter means multiplying the radius by four, the area is multiplied by 16 when you double the diameter.
How can you calculate the radius with the area given to you?
Area of a circle = pi x radius squared, so to get the radius, divide the Area by pi (3.14159), and then find the square root of that
find the length of the radius the circumference and the area of the circle the center is 20 feet use 3.14 for pi?
radius = diameter/2 circumference = 2*pi*radius or pi*diameter area = pi*radius2
What is the area of a circle with radius of 17?
area = Pi*(radius squared) = 289*pi, or approximately 907.92 square units.
A circle has a radius of 17 what is the area?
289*pi square units
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).
Is the area of a circle is twice the radius?
Area equals pi times the radius squared.
Area circle P 1 radius radius circumference equals 2 P1radius?
The area is pi x radius x radius The circumference is 2 x pi x radius pi = 3.14
How do you find the radius of a circle if you already know the area?
The area of a circle equals pi times the radius squared (A = pi*radius2) where pi is 3.1416 So the radius is the square root of the area divided by 3.1416
What is the area of a circle with a radius of 9?
The general formula for area of a circle is A=(pi)r2, the product of pi and the square of the radius. In this instance, the area equals pi X 92 = about 254.47.
What is the radius of the area 345cm2?
Since area equals Pi times radius squared take and substitute what is known. 345 equals Pi times the radius squared. divide Pi into both sides for 109.8 equals the radius squared. Now take the square root of 109.8 to get an r of 10.47936 cm.
What is the area of a circle which has a radius equal 1?
The area equals to pi: 3.141592654.....
What is area of a circle if circumference equals pi divided by 2?
Area of a circle is: pi times radius squared
How is pi used to determine the area of a circle?
Area of a circle equals pi (3.14) times the radius squared.
Area of a circle equals 3rsquared where are is the radius?
A = pi rsquared where pi = 3.14159. It is not 3rsquared but 3.14159rsquared
