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Area = pi*0.52 = 0.785 square units to 3 d.p.
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If the area of a circle is 25 square units what is the radius of the circle?
area equals pi r squared therefor r squared equals area over pi. Now find square root of r squared and you have "R" (radius) = 2.821
How do you find the bottom half of a circle?
To find the area of half a circle, use the formula for a circle pi*r^2 divided by 2. pi = 3.14, r = radius (half the distance across the circle)
What is the area of a circle with a diamerer of 24 meters use 3.14?
area of a circle = pi*r^2 with pi being 3.1415926535..... that is the ratio between the diameter of the circle and it's circumference. r stands for radius (half the diameter if you didn't know) so for this circle to find the area all you have to do is 12 (half of 24 the diameter to find the radius) , then square it (144) then times it by pi which equals approximately 452.39 meters^2
How does area of a circle relate to circumference?
The area of a circle is equal to the perimeter times half the radius. That is, A = P*r/2
What is the area of a circle if the diameter is 5?
The area of a circle is pi multiplied by "'r' (radius) squared""r" is 2.5 (half of the diameter)"r squared" is 2.5*2.5 which is 6.25.In terms of pi, the area of the specified circle is 6.25[pi] units squaredPi's rounded answer is 3.14. So in an answer not in terms of pi, you would multiply 6.25 and 3.14. That equals 19.625 units squared
What is the area of the circle if the r equals half?
area = πr2 = π(1/2)2 = π/4 units2 ~= 0.79 units2
What is the area of a circle if r equals 9 yd?
r=9yd
What is the formula for finding the area of a semi-circle in terms of pi?
semi means half A semi-circle is half a circle The formula for the area of a circle is A = (Π * r^2) Area of semi circle = (Π * r^2) ÷ 2
How do you fin the area of a circle?
The area of a circle equals pi x r squared or A = pi x r2 A = area of circle pi = approximatley 3.14 r = radius
How do you find the circumference of a circle when you know the area?
OK, SO to find the area of a circle, you find the radius (half of the diameter), and fit it into the equation πr2=A where r equals radius and A = area. The perimeter of a circle is π multiplied by the diameter. π is ≈ 3.1415296.
If the area of a circle is 25 square units what is the radius of the circle?
area equals pi r squared therefor r squared equals area over pi. Now find square root of r squared and you have "R" (radius) = 2.821
What is the Diameter of circle with a area?
the diameter is the length across the circle, the area is pie r squared r is radius, which is half of the diameter
How do you find the area of a semicircular shape?
Assume the shape is half circle. The area of the circle is: A = πr² where r is the radius Since the semi circle has half the area of the circle, we obtain: A = πr²/2
What is the area of a circle if r equals 2cm?
If r = 2 cm, then A = 12.6 cm2
What is the area r equals 3 in?
The area of a circle is pi r2 If r = 3, that makes the area roughly 28.27
How do you find the bottom half of a circle?
To find the area of half a circle, use the formula for a circle pi*r^2 divided by 2. pi = 3.14, r = radius (half the distance across the circle)
What is the formula for area for circle?
The formula for the area of a circle is πr2, written in verbal form as: "The value Pi times the radius of the circle squared", where r is the radius (half of the diameter, or the distance from the center to any point on the outer edge of the circle) of the circle, and π equals about 3.1415.
