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Question 47Asked in DSSSB TGT Computer Science, 7 Feb 2024, Shift 2 (12:30 PM)

Each of the length, breadth and height of a cuboid is decreased by 12 percent. What is

Each of the length, breadth and height of a cuboid is decreased by 12 percent. What is the percentage decrease in the total surface area of the cuboid?
  1. A20.24 percent
  2. B24.78 percent
  3. C18.92 percent
  4. D22.56 percent
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Correct answer: (D) 22.56 percent

Explanation

Surface area depends on the square of the dimensions: 0.88² = 0.7744, so the area falls by 1 − 0.7744 = 22.56 percent.

From DSSSB TGT Computer Science PYQ, 7 Feb 2024, Shift 2 (12:30 PM)

This is question 47 of DSSSB TGT Computer Science PYQ, 7 Feb 2024, Shift 2 (12:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.