Instructions

Complete each representation, then check your answer by clicking on the "Reveal Answer" link. If possible, record your complete answer in your notes.

  1. Mr. Ramsey took the fence material he used to enclose a circular pen that was 12 ft. in diameter and plans to use the same material to build a square pen for his chickens. Approximately how big can the square pen be? Draw a picture to represent the problem. Choose the appropriate figure(s) to represent the problem.

    Interactive popup. Assistance may be required.

    Reveal Answer

    Circle, diameter 12 ft; Square side x
    Square side 12 ft; Circle, diameter x; Circle, radius 12 ft
    Square side 12x; Circle, radius 12 ft; squareClose Pop Up

  2. A dog and pony act for a circus uses a trapezoidal platform made up of a 12” by 12” square base and a 4” by 4” square top. What length of material would be needed to add a horizontal support to each side of the platform so that the supports are halfway between the base and the top?

    Trapezoidal platform

    Write a verbal description of how you would solve this problem. Click on the blanks to check your answers.

    For each __________ face of the platform, __________ the lengths of the top and bottom edges and __________ the sum by __________ to find the __________ of the trapezoidal face. __________ this number times __________ for the __________ amount of material needed.
    Choose the appropriate words to complete your problem-solving plan.

    Word Bank: subtract, four, total, horizontal, median, add, two, multiply, vertical, divide, sum

Complete the representation by dragging the appropriate numbers and symbols from those provided. If possible, record your complete answer in your notes.

  1. A mailbox store sells a certain size box which is 4 inches tall and whose length is 12 inches longer than its width. A device that drops packing peanuts into the box requires a formula for the amount (in cubic inches) that the box can hold in terms of its width.
  2. Write an equation that can be used to represent this problem.

    Interactive exercise. Assistance may be required.

    Drag the appropriate symbols to complete your equation.

  3. Debra bought a cylinder shaped ottoman and wants to paint just the lateral surfaces of it to match the rest of her furniture. If the radius of the top of the ottoman is 12 inches and its height is 16 inches, how much area will Debra have to paint?
  4. Write an expression which represents the area to be painted.

    Interactive exercise. Assistance may be required.

    Drag the appropriate symbols to complete your expression.