Multiple choice

The base of a solid right prism of height 10 cm is a square and its volume is 250 cm3. What is the total surface area of the prism (in cm2)?

  1. 220

  2. 150

  3. 250

  4. 270
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Volume of prism = Base area × height = 250 cm³. Since height = 10 cm, base area = 250/10 = 25 cm². For a square base, side = √25 = 5 cm. Total surface area = 2(base area) + (perimeter × height) = 2(25) + (4×5×10) = 50 + 200 = 250 cm². Option C is correct.

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