Radius
If the diameter is 10 inches, what is the radius?
5 inches
If the radius of a circle is 7 yards, what is the diameter?
14 yards
What is the area of a circle whose radius is 2 inches?
12.56 inches squared
What is the circumference of a circle whose diameter is 10 inches?
31.4 inches
Define circle.
A closed figure with all points on the outer boundary equidistant from a point in the center.
If the diameter of a circle is 15 feet, what is the radius?
7.5 feet
If the radius of a circle is 15.3 inches, what is the diameter?
30.6 inches
What is the area of a circle with a radius of 9 feet?
254.34 feet squared
What is the circumference of a circle whose diameter is 13 feet?
40.82 feet
Define circumference.
The distance around a circle.
If the diameter of a circle is 1/2 of a foot, what is the radius?
1/4 of a foot
If the radius of a circle is 1/5 of a foot, what is the diameter?
2/5 of a foot
What is the area of a circle whose diameter is 10 yards?
78.5 yards squared
What is the circumference of a circle whose radius is 4 yards?
25.12 yards
Define radius of a circle.
The distance from the center to a point on the circle.
If the diameter of a circle is 28.4 meters, what is the radius?
14.2 meters
If the radius of a circle is 115.32 meters, what is the diameter?
230.64 meters
What is the area of a circle whose diameter is 81 miles?
5150.385 miles squared
What is the circumference of a circle whose radius is 2.5 meters?
15.7 meters
Define diameter of a circle.
The distance from one point on a circle to another, that passes through the center point.
If the diameter of a circle is 83.7 yards, what is the radius?
41.85 yards
If the radius of a circle is 2 1/2 feet, what is the diameter?
5 feet
What is the area of a circle whose radius is 2.8 feet?
24.62 feet squared
What is the circumference of a circle whose radius is 85 centimeters?
533.8 centimeters
Define pi.
The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159