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What is the circumference of the circle with radius 39?
2*pi*39 measured in linear units
Why do you square the radius when finding the area of a cirlce?
Because the circle is measured in square units.
What is the radius of a circle of 6.5?
The radius of a circle of radius 6.5 units is 6.5 units.
Why is the answer for arc length in units and not in square units?
Because it is still length. It is measured along a curve (arc), rather than a straight line. It can be found by multiplying the arc angle (in radians) by the radius. So a complete circle has an angle of 2*pi radians. Multiply this by the radius and you have 2*pi*radius, which is the circumference of a circle (measured in units, not square units).
What is the circumference of a circle when the radius equals 8.2?
2*pi*8.2 measured in linear units
The formula for area of a circle?
radius x radius = # pi X # = answer... pi x radius, square the radius
How is the area of circle caculated?
Area = pi*radius squared and measured in square units
What is the area of a circle with a radius of 4.6?
Area = pi*4.62 measured in square units
What is the circumference of the circle with radius 39?
2*pi*39 measured in linear units
Why do you square the radius when finding the area of a cirlce?
Because the circle is measured in square units.
What is the radius of a circle of 6.5?
The radius of a circle of radius 6.5 units is 6.5 units.
Why is the answer for arc length in units and not in square units?
Because it is still length. It is measured along a curve (arc), rather than a straight line. It can be found by multiplying the arc angle (in radians) by the radius. So a complete circle has an angle of 2*pi radians. Multiply this by the radius and you have 2*pi*radius, which is the circumference of a circle (measured in units, not square units).
What is the circumference of a circle when the radius equals 8.2?
2*pi*8.2 measured in linear units
How do you find the area of an circle when the radius is 15?
Area measured in square units = pi*152
What is the radius of a circle if the area is 4?
The radius of the circle is 2 units. * * * * * If the area is 4 units, the radius is 1.128 units
What does pi have to do with the area and circumference of a circle?
It is used in finding the circumference and area of a circle. Circumference = 2*pi*radius or pi*diameter measured in linear units Area = pi*radius2 measured in square units
What is the circumference of a circle with a radius of 45 units?
A circle with a radius of 45 units has a circumference of 282.74 units.
