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Formulas Flashcards

7 cards from real Geometry practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the area of a trapezoid with parallel sides of 6 and 10 and a height of 4?

    Answer: 32

    Area = ½(b1 + b2)h = ½(6 + 10)(4) = 32.

  2. What is the circumference of a circle with radius 7? (use π ≈ 3.14)

    Answer: 43.96

    Circumference = 2πr = 2(3.14)(7) = 43.96.

  3. What is the volume of a cube with edge length 5?

    Answer: 125

    Volume of a cube = s³ = 5³ = 125.

  4. What is the area of an equilateral triangle with side length 4? (use √3 ≈ 1.732)

    Answer: 6.93

    Area = (√3/4)s² = (1.732/4)(16) ≈ 6.93.

  5. What is the surface area of a sphere with radius 3? (use π ≈ 3.14)

    Answer: 113.04

    Surface area = 4πr² = 4(3.14)(9) = 113.04.

  6. What is the length of the hypotenuse of a right triangle with legs 6 and 8?

    Answer: 10

    By the Pythagorean theorem, √(6² + 8²) = √100 = 10.

  7. What is the volume of a cylinder with radius 2 and height 5? (use π ≈ 3.14)

    Answer: 62.8

    Volume = πr²h = 3.14(4)(5) = 62.8.