A) A segment that connects two points on a circle and passes through the center. B) The distance around a circle. C) A segment that connects any two points on a circle. D) A segment from the center of a circle to a point on the circle.
A) Circumference B) Diameter C) Chord D) Radius
A) A radius and diameter always have the same length. B) A diameter is twice the length of a radius. C) A radius is twice the length of a diameter. D) A diameter is half the length of a radius.
A) 6 cm B) 36 cm C) 9 cm D) 18 cm
A) 2(3.14)(6²) B) 3.14(6²) C) 3.14(12²) D) 2(3.14)(6)
A) Circle B's circumference is half as large. B) Circle B's circumference is four times as large. C) Circle B's circumference is the same. D) Circle B's circumference is twice as large.
A) C = 2(3.14)(25) B) C = 25 ÷ 3.14 C) C = 3.14(25) D) C = 3.14(25²)
A) 31.4 inches B) 20 inches C) 15 inches D) 10 inches
A) 62.8 ft B) 100 ft C) 314 ft D) 31.4 ft
A) 615.44 ft² B) 153.86 ft² C) 87.92 ft² D) 43.96 ft²
A) C = 78.5 ft; A = 31.4 ft² B) C = 15.7 ft; A = 78.5 ft² C) C = 31.4 ft; A = 78.5 ft² D) C = 31.4 ft²; A = 78.5 ft
A) 314 m² B) 125.6 m² C) 1,256 m² D) 62.8 m²
A) 314 ft² B) 78.5 ft² C) 25 ft² D) 50 ft²
A) 200.96 ft B) 64 ft C) 25.12 ft D) 50.24 ft
A) 50.24 in² B) 200.96 in² C) 100.48 in² D) 803.84 in²
A) Student A only B) Both students C) Student B only D) Neither student
A) Radius for fencing and diameter for flooring B) Circumference for fencing and area for flooring C) Diameter for fencing and radius for flooring D) Area for fencing and circumference for flooring
A) The student is incorrect because circumference equals π × radius. B) The student is correct because circumference equals π × diameter. C) The student is incorrect because circumference is measured in square meters. D) The student is incorrect because the diameter must be squared.
A) The second circle has twice the circumference and twice the area. B) The second circle has four times both the circumference and area. C) The second circle has four times the circumference and twice the area. D) The second circle has twice the circumference and four times the area.
A) Find the radius → use A = πd² → find the circumference B) Divide the circumference by 2 → use A = πd C) Find the diameter → find the radius → use A = πr² D) Use A = πd² → find the circumference |