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Geometric Area and Volume Flashcards

6 cards from real BMST 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. A cylindrical storage tank has a radius of 5 meters and a height of 10 meters. What is the maximum volume of liquid the tank can hold? (Use π ≈ 3.14)

    Answer: 785 cubic meters

    The volume of a cylinder is calculated using the formula V = πr²h. Given the radius (r) is 5 meters and the height (h) is 10 meters, the calculation is V = 3.14 * (5²)* 10 = 3.14 * 25 * 10 = 785 cubic meters.

  2. A rectangular garden has a length of 15 feet and a width of 8 feet. A triangular flower bed is situated in the corner, with a base of 6 feet and a height of 4 feet that are part of the garden's length and width. What is the total area of the garden that is NOT occupied by the flower bed?

    Answer: 108 sq ft

    First, calculate the total area of the rectangular garden: Area = length × width = 15 ft × 8 ft = 120 sq ft. Next, calculate the area of the triangular flower bed: Area = ½ × base × height = ½ × 6 ft × 4 ft = 12 sq ft. Finally, subtract the area of the flower bed from the total area of the garden: 120 sq ft - 12 sq ft = 108 sq ft.

  3. Which of the following formulas correctly represents the volume of a rectangular prism?

    Answer: V = length × width × height

    The volume of a rectangular prism (or a box) is found by multiplying its three dimensions: length, width, and height. The formula is V = length × width × height.

  4. The area of a circle is 78.5 square inches. What is the approximate radius of the circle? (Use π ≈ 3.14)

    Answer: 5 inches

    The formula for the area of a circle is A = πr². To find the radius, you rearrange the formula to r² = A / π. So, r² = 78.5 / 3.14 = 25. Then, take the square root of 25 to find the radius, r = 5 inches.

  5. A contractor needs to pour a concrete slab that is 20 feet long, 15 feet wide, and 0.5 feet thick. How many cubic feet of concrete will be needed?

    Answer: 150 cubic feet

    The concrete slab is a rectangular prism. Its volume is calculated by multiplying its length, width, and height (thickness). Volume = 20 ft × 15 ft × 0.5 ft = 150 cubic feet.

  6. What is the surface area of a cube with a side length of 4 cm?

    Answer: 96 cm²

    A cube has 6 identical square faces. The area of one face is side × side = 4 cm × 4 cm = 16 cm². To find the total surface area, multiply the area of one face by the number of faces: 16 cm² × 6 = 96 cm².