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### MEAP Preparation - Grade 6 Mathematics4.26 Circle Problems

 The radius of a circle is half the diameter. The area of a circle is given by pi x r2. 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. Example: The radius of a circle is 5 cm. Find the area. Area = pi x r2 Area = 3.14 x 5 x 5 Answer: 78.5 sq cm Directions: Answer the following questions. Also write at least ten examples of your own.
 Q 1: Find the circumference of a circle with a diameter of 13 centimeters to the nearest tenth of a centimeter.40.855.142.9 Q 2: A circle has a radius of 3 feet. What is the area of the circle?18.84 square feet9.32 square feet188 square feet28.26 square feet Q 3: If the diameter of the circle is 25 cm, what is its radius?1.25 cm125 cm1812.5 cm Q 4: A circle has an area of 31,400 square inches. What is the radius?1000 inches100 inches6.28 inches10 inches Q 5: If the circumference of a circle is 62.8 centimeters, what is the area?350.7 square centimeters197.192 square centimeters3140 square centimeters313.72 square centimeters Q 6: The circumference of a circle is 47.1 inches. What is the area of the circle?147.894 square inches70.7 square inches176.625 square inches706.5 square inches Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!

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