Vocab
Radius/Diameter
Circumference
Area
Formulas/Labels
100
What do you call a line that goes from the center of a circle to the edge.
What is radius.
100
If the radius is 4 in, what is the diameter?
What is 8 in.
100
What is the circumference if the radius is 9 cm? Round to the nearest tenth.
What is 56.5 cm.
100
What is the area of a circle with a radius of 5 in? Round to the nearest tenth.
What is 78.5 square inches (or in with the exponent two)
100
What is the label for circumference?
What is the units given (in, m, cm, km, yd, mi...)
200
What is the line that goes all the way across the circle, but not necessarily the middle.
What is a chord.
200
If the diameter is 10 mm, what is the radius?
What is 5 mm.
200
What is the circumference if the diameter is 9 cm? Round to the nearest tenth.
What is 28.3 cm
200
What is the area of a circle with a diameter of 12 cm? Round to the nearest tenth.
What is 113.1 square cm (or cm with the exponent 2)
200
What is the label for area?
What is square units (sq. cm, sq. in, sq. mi, sq. yd.....) This label can be written with the label and the exponent 2.
300
What is the line that goes all the way across the circle and MUST pass through the middle?
What is the diameter.
300
If the diameter is 11.8 mi, what is the radius?
What is 5.9 mi.
300
What is the circumference if the radius is 4.2 yd? Round to the nearest tenth.
What is 26.4 yd.
300
What is the area of a circle with a radius of 15.5 mi? Round to the nearest tenth.
What is 754.8 square miles (or miles with the exponent 2)
300
What is the formula for area?
What is pi r squared
400
What is the outside edge of the circle called?
What is the circumference.
400
What is the diameter if the radius is 23.9 ft?
What is 47.8 ft.
400
What is the circumference if the diameter is 12.66 cm? Round to the nearest hundredth.
What is 39.77 cm
400
What is the area of a circle with a diameter of 17.2 m? Round to the nearest hundredth.
What is 232.35 square meters (or meters with the exponent 2)
400
What is the formula for circumference?
What is "pi d" OR "2 pi r"
500
What do you call the space inside of a circle?
What is the area.
500
What is the radius if the diameter is 17.64 in?
What is 8.82 in.
500
Which circle has a greater circumference: one with a radius of 8 km, or one with a diameter of 10 km?
What is the one with a radius of 8 km.
500
Which circle has a smaller area; one with a radius of 3, or one with a diameter of 7?
What is the one with a radius of 3.
500
If a circle has a radius of 11 in, what will be larger its circumference or its area?
What is area
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