Radius & Diameter
The distance from the center of a circle to any point of the circle.
What is the radius?
The distance around a circle.
What is the circumference?
What 2 things make a graph proportional?
Straight line and starts at the origin (0,0).
The inside measurement of a circle label in units squared.
Area
The distance across a circle measured through its center.
What is the diameter?
A circle has a diameter of 3 inches. This is the circumference. Use π = 3.14.
What is 9.42 inches?
What is the constant of proportionality (K value) for the point (5,15)?
3 because 5 x 3 = 15 and 15 / 5 = 3.
Find the area of a circle that has a radius of 7ft.
A=153.86 ft squared
The radius is 4 inches. What is the diameter?
What is 8 inches?
A circle has a diameter of 102.38 inches. What is the circumference? Use π = 3.14
What is 321.47 inches?
If Millie carves 6 Jack'O'Lanterns in 3 hours how many is she carving per hour?
2 because 6 carvings in 3 hours is 6/3=2.
Find the area of a circle that has a radius of 4.5 in.
A=63.59 inches squared
The Diameter is 25 meters. What is the Radius?
What is 12.5 meters?
A circle has a radius of 16 feet. Find the Circumference. Use π = 3.14.
100.48 feet
If Tyson bakes 30 cookies in 5 hours how many does he bake in 1 hour?
Find the area of a circle that has a diameter of 12 cm.
A=113.04 cm squared
The Radius is 81 cm. What is the Diameter?
What is 162 cm?
If the radius is 123.45, this is the circumference. Use π = 3.14
What is 775.266?
If a car is going 45 miles per hour what is the constant of proportionality?
45 because 45 miles per hour means 45 miles in 1 hour which is the constant of proportionality.
Find the area of a circle that has a diameter of 25 mm.
A=490.63 mm squared