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If the area of a quarter-circle is 19.63 square centimeters find its radius.
Answer: 2.80 cm
Calculate the perimeter of a shape made up of four quarter-circles with a common center.
Answer: 3.14 times the radius of one quarter-circle.
Determine the area of a quarter-circle with a radius of 5 meters.
Answer: 9.82 m²
If the radius of a quarter-circle is 9 cm find its circumference.
Answer: 14.13 cm
Explain what a quarter-circle is.
Answer: One-fourth of a circle
Explain the relationship between the radius and the diameter of a semi-circle.
Answer: The radius is half the length of the diameter in a semi-circle.
How does the area of a semi-circle differ from the area of a full circle with the same radius?
Answer: The area of a semi-circle is half that of a full circle.
If the area of a semi-circle is 28.26 square centimeters find its diameter.
Answer: 6 cm
A semi-circular garden has a circumference of 22 meters. Calculate its radius.
Answer: 3.50 meters
Find the area of a semi-circle with a radius of 7 cm.
Answer: 77 cm²
Determine the circumference of a semi-circle with a diameter of 16 meters.
Answer: 25.12 meters
If the diameter of a semi-circle is 12 cm what is the radius?
Answer: 6 cm
If the area of a circle is 50.24 square centimeters find its diameter.
Answer: 4 cm
Explain how the radius and the area of a circle are related.
Answer: The area is proportional to the square of the radius (A ∝ r²).
A circular pond has an area of 78.5 square meters. Find the radius of the pond.
Answer: 5 meters
Calculate the area of a circle with a radius of 3.5 cm.
Answer: 38.48 cm²
If the area of a circle is 154 square centimeters find its radius.
Answer: 7 cm
Determine the area of a circle with a diameter of 10 meters.
Answer: 78.54 m²
Find the area of a circle with a radius of 6 cm.
Answer: 113.10 cm²
What is the formula to find the area of a circle?
Answer: A = πr²
If the circumference of a circle is 18.84 cm what is its diameter?
Answer: 6 cm
What is the relationship between the diameter and the circumference of a circle?
Answer: C = πd
A circular garden has a circumference of 36 meters. Find the radius of the garden
Answer: 5.73 meters
Calculate the circumference of a circle with a radius of 8.5 cm.
Answer: 53.38 cm
If the circumference of a circle is 31.4 cm what is its radius?
Answer: 5 cm
Determine the circumference of a circle with a diameter of 14 meters.
Answer: 43.96 meters
If the radius of a circle is 5 cm what is its circumference?
Answer: 31.4 cm
What is the formula to find the circumference of a circle?
Answer: C = 2πr or C = πd


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