Radius & Diameter
Circumference and Area
Circular Solids
Circles in the real world
Composite figures
100
The diameter is 10 inches. Find the radius.
What is 5 inches.
100
A circle has a diameter of 12.5 inches. What is the circumference in terms of
pi
?
What is 12.5pi inches?
100
What is the cross section of a cylinder perpendicular to the base?
What is a rectangle.
100
A bicycle wheel has a radius of 1 foot. If the bicycle wheel rotates one time, what distance is travelled?
What is 2pi or 6.28 feet.
100
Find the perimeter. Give the approximate answer.
What is 10.28 in?
200
The diameter is 25 feet. Find the radius.
What is 12.5 feet.
200
A circle has a diameter of 25 inches. What is the circumference rounded correctly to 2 decimals?
What is 78.54 inches
200
What is the cross section of a cone perpendicular to the base?
What is a triangle.
200
A large Jeep has a tire with a radius of 18 inches. Find the circumference of the wheel.
What is 36pi or 113.04 inches
200
Find the area. Give your answer in terms of pi.
What is 45.1 in?
300
The circumference of the circle is 56.52 or 18pi.
Find the radius.
What is 9 inches
300
A circle has a radius of 50 miles. What is the area of the circle TO THE NEAREST MILE?
What is 7854 mi2.
300
A cylindrical swimming pool has a height of 4 feet and circumference of about 75.36 feet. What is the area of a vertical cross section through the center of the pool? Use 3.14 for pi.
96 square feet
300
Matt is learning to drive a car. The steering wheel in his car has a radius of 9 inches. His instructor says "Place your hands at 10 and 2." (1/3 of the circle) What is the area of the sector formed in terms of pi?
What is 27pi in2. or 84.78 in2
300
Find the shaded area. Give the approximate answer.
What is 13.76 ft2?
400
The area of this circle is 78.5 in2.
Find the radius.
What is 5 inches.
400
A circle has a diameter of 16. Find the area in terms of pi.
What is 64 pi
400
Find the area of a vertical cross section through the center of a sphere with a diameter of 16 centimeters. Use 3.14 for pi.
About 200.96 square centimeters
400
John owns a circular pool in his back yard. If he swims around the pool, he swims 30pi meters. What is the radius of this circle?
What is 15 meters.
400
Find the area. Give the approximate answer.
What is 122.1 cm2?
500
A circle has an area of
256pi cm2.
Find the diameter.
What is 32cm
500
A circle has a circumference of
6pi
.
What is the area?
What is 9pi?
500
Fin the area of a vertical cross section through the centers of the bases of a cylinder with a height of 27 inches and a circumference of about 47.1 inches. Use 3.14 for pi.
405 square inches
500
A pizza with a diameter of 22 inches cost $28. How much does one square inch of pizza cost?
What is $0.074 per square inch
500
find the area of the shape. Give the approximate answer.
what is 636 cm3?