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Which is true about the radius of a circle?
That it is half the diameter of a circle
What is the area of a circle if it has a diameter which is 18 feet long?
The area of a circle is equal to πr2 where π (pi) is equal to approximately 3.142 and r represents the radius of the circle. Because the question gives you the diameter and not the radius you have to use the measurement of the diameter to calculate the radius. Remember that the radius is equal to half the diameter. So if the diameter is equal to 18 feet, then the radius of this particular circle is equal to 9 feet. Plugging this into our equation for area we get: area = π(92) area = 3.142(81) area = about 254.5 ft2 (don't forget that the answer is in squared feet not just feet)
What is the diameter of a circle that is equal to pi?
If you mean the diameter of a circle with area pi, then the diameter is 2. If you mean the diameter of a circle with circumference pi, then the diameter is 2. If you mean the diameter of a circle with diameter pi, then the diameter is pi. If you mean the diameter of a circle with radius pi, then the diameter is 2pi.
What is the radius of a circle if the diameter is 34?
17 Half the diameter
What is the radius of a circle with a diameter of 1.8 km?
the radius of a circle is half the diameter, so half of 1.8 is .9. The radius is .9km.
How do you find the radius of a circle inside a square?
The same as half the side of the square, as the radius of the circle is half its diameter, and the diameter of the circle is equal to the side of the square.
What is a line that cuts a circle in half called?
A line that cuts a circle in half is called a diameter. It passes through the center of the circle and divides it into two equal parts.
Do the radius equal half of the circumference?
No because it equals half the diameter of a circle
What is the diameter and area of a circle?
the diameter of a circle is defined by the largest length from one side of the circle to the other side of the circle. the area of a circle is equal to pi(3.14) times the radius squared. the radius is equal to half of the diameter.
What is half of a circle?
half of the radius the radius is half of the diameter the diameter is the with of the circle. This also can be called a quadrent circle.
What is half of a diameter of a circle?
The radius is half of the diameter of a circle.
Is a circle less than or equal to the radius?
The radius of a circle is the distance from the center of the circle, out to the edge of the circle. The distance all the way across the circle is the "diameter." Half of the diameter is the radius.
Half the diameter of a circle?
Half the diameter of a circle is called its radius.
What do you call half of a diameter in a circle?
The half of a diameter of a circle is known as a radius.
Does the radius divide the circle in half?
No. A diameter divides a circle in half. A radius is half the diameter.
What is radius equal to?
Radius is half of the diameter - i.e. it is the distance from the centre to the edge of the circle.
How do you find the radius in a circle when all you have is the diameter.?
The diameter is equal to half of the radius. So take the value of the diameter and divide it by two and that is your radius.
