diameter | MathCelebrity Forum

diameter

  1. math_celebrity

    If the diameter of a circle is n, what is the circumference?

    If the diameter of a circle is n, what is the circumference? Diameter of a circle = pi(d) Given d = n, we have: Diameter = pi(n)
  2. math_celebrity

    Fantasia decided to paint her circular room which had a diameter of 25 feet. She started painting in

    Fantasia decided to paint her circular room which had a diameter of 25 feet. She started painting in the center and when she had painted a circle with a 5-foot diameter, she used one quart of paint. How many more quarts of paint must Fantasia buy to finish her room? The area formula for a...
  3. math_celebrity

    The button on Alice's shirt has a diameter of 8 millimeters. What is the button's radius?

    The button on Alice's shirt has a diameter of 8 millimeters. What is the button's radius? Radius = Diameter / 2 Radius = 8/2 Radius = 4
  4. math_celebrity

    if my diameter is 19 inches, what is my radius?

    if my diameter is 19 inches, what is my radius? Radius = Diameter/2 Radius = 19/2
  5. math_celebrity

    A penny has a diameter of 19 millimeters. What is the radius of the penny.

    A penny has a diameter of 19 millimeters. What is the radius of the penny. D = 2r To solve for r, we divide each side by 2: r = D/2 Plugging in D = 19, we get: r = 19/2 or 9.5
  6. math_celebrity

    A spherical water tank holds 11,500ft^3 of water. What is the diameter?

    A spherical water tank holds 11,500ft^3 of water. What is the diameter? The tank holding amount is volume. And the volume of a sphere is: V = (4pir^3)/3 We know that radius is 1/2 of diameter: r =d/2 So we rewrite our volume function: V = 4/3(pi(d/2)^3) We're given V = 11,500 so we have...
Back
Top