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OAR Math Skills: Geometry Questions and Answers Flashcards

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

Read the first 6 OAR Math Skills: Geometry Questions and Answers flashcards as text

  1. A rectangular prism has a length of 8 cm, a width of 5 cm, and a height of 3 cm. What is its surface area?

    Answer: 158 sq cm

    Surface area = 2(lw + lh + wh) = 2(40 + 24 + 15) = 2(79) = 158 sq cm.

  2. Two similar triangles have a scale factor of 3:5. If the area of the smaller triangle is 27 sq in, what is the area of the larger triangle?

    Answer: 75 sq in

    Area ratio equals the square of the scale factor: (3/5)^2 = 9/25, so 27/x = 9/25, giving x = 75 sq in.

  3. What is the measure of each interior angle of a regular octagon?

    Answer: 135 degrees

    Interior angle = (n-2) x 180 / n = (8-2) x 180 / 8 = 1080 / 8 = 135 degrees.

  4. A chord is 6 cm from the center of a circle with radius 10 cm. What is the length of the chord?

    Answer: 16 cm

    Half the chord = sqrt(10^2 - 6^2) = sqrt(64) = 8, so the full chord = 16 cm.

  5. If the diagonal of a square is 10 units, what is the area of the square?

    Answer: 50 sq units

    Area of a square given its diagonal d is d^2/2 = 100/2 = 50 sq units.

  6. A cylinder has a radius of 4 cm and a height of 9 cm. What is its volume in terms of pi?

    Answer: 144pi cu cm

    Volume = pi*r^2*h = pi*16*9 = 144pi cu cm.