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MEAP Preparation - Grade 6 Mathematics
4.26 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.
: A circle has an area of 31,400 square inches. What is the radius?
: If the circumference of a circle is 62.8 centimeters, what is the area?
350.7 square centimeters
313.72 square centimeters
197.192 square centimeters
3140 square centimeters
: 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?
: Find the circumference of a circle with a diameter of 13 centimeters to the nearest tenth of a centimeter.
: The circumference of a circle is 47.1 inches. What is the area of the circle?
176.625 square inches
706.5 square inches
70.7 square inches
147.894 square inches
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