Multiple choice

The base of a right prism is a square having side of 15 cm. If its height is 8 cm, then find the total surface area.

  1. 940 cm2

  2. 920 cm2

  3. 900 cm2

  4. 930 cm2
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D Correct answer
Explanation

Total Surface Area = 2 * BaseArea + Perimeter * Height. BaseArea = 15*15 = 225. Perimeter = 4*15 = 60. TSA = 2*225 + 60*8 = 450 + 480 = 930.

AI explanation

The total surface area of a prism is calculated as the lateral surface area plus the base areas, which simplifies for a square base to 2(base area) + (base perimeter times height). Substituting the given values gives 2(15 times 15) + (4 times 15 times 8) = 450 + 480 = 930 cm².

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