kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant
on highly effective K-12 Math & English
Online Quiz (
Questions Per Quiz =
Grade 5 - Mathematics
7.19 Circle Problems
The radius of a circle is half the diameter.
The area of a circle is given by pi x r
. square units.( r is the radius and pi = 3.14)
The perimeter of a circle is the circumference.
The circumference of a circle is given by C = 2 x pi x r units.
: The radius of a circle is 5 cm. Find the area.
Area = pi x r
Area = 3.14 x 5 x 5
Answer: 78.5 sq cm
Answer the following questions. Also write at least ten examples of your own.
: If the circumference of a circle is 62.8 centimeters, what is the area?
3140 square centimeters
313.72 square centimeters
350.7 square centimeters
197.192 square centimeters
: A circle has an area of 31,400 square inches. What is the radius?
: If the diameter of the circle is 25 cm, what is its radius?
: If the radius of the circle is 10 cm, what is its diameter?
: The circumference of a circle is 47.1 inches. What is the area of the circle?
706.5 square inches
147.894 square inches
70.7 square inches
176.625 square inches
: A circle has a radius of 3 feet. What is the area of the circle?
28.26 square feet
188 square feet
9.32 square feet
18.84 square feet
Question 7: This question is available to subscribers only!
Question 8: This question is available to subscribers only!
Subscription to kwizNET Learning System
offers the following benefits:
Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
Instant scoring of online quizzes
Progress tracking and award certificates to keep your student motivated
Unlimited practice with auto-generated 'WIZ MATH' quizzes
Child-friendly website with no advertisements
Choice of Math, English, Science, & Social Studies Curriculums
Excellent value for K-12 and ACT, SAT, & TOEFL Test Preparation
Get discount offers by sending an email to