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DSSSB TGT C9perimeter — practice questions

Explore 9 free C9perimeter questions in DSSSB TGT Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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C9perimeter questions and exercises with answers

Showing questions 1–9 of 9.

As per your syllabus, what is the formula for the perimeter of a RECTANGLE with length a units and width b units?Read the answer and worked solution →As per your syllabus, the perimeter of a SQUARE is a special case of the perimeter of a rectangle. With side a units, what is the square's perimeter?Read the answer and worked solution →As per your syllabus, for ANY square (regardless of its size), what is the ratio of perimeter to side?Read the answer and worked solution →As per your syllabus, for ANY equilateral triangle, what is the ratio of perimeter to side?Read the answer and worked solution →As per your syllabus, what is the circumference of a circle of diameter d expressed in terms of π?Read the answer and worked solution →As per your syllabus, the circumference of a circle in terms of its radius r is given by which formula?Read the answer and worked solution →As per your syllabus, what is the length of a SEMICIRCLE of radius r?Read the answer and worked solution →As per your syllabus, what is the length of a QUARTER CIRCLE (arc) of radius r?Read the answer and worked solution →As per your syllabus, what is the length of an arc of a circle of radius r that subtends an angle of θ degrees at the centre?Read the answer and worked solution →

Worked practice questions

As per your syllabus, what is the formula for the perimeter of a RECTANGLE with length a units and width b units?

  1. ½(a + b) units
  2. a² + b² units
  3. ab units
  4. 2(a + b) units
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Correct answer: D. 2(a + b) units

Rectangle perimeter = 2(a+b). The other options confuse perimeter with area or other formulas.

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As per your syllabus, the perimeter of a SQUARE is a special case of the perimeter of a rectangle. With side a units, what is the square's perimeter?

  1. a² units
  2. ½a units
  3. 2a units
  4. 4a units
Show answer and solution

Correct answer: D. 4a units

Square is a rectangle with a=b, so perimeter = 2(a+a) = 4a. The other options misstate the formula.

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As per your syllabus, for ANY square (regardless of its size), what is the ratio of perimeter to side?

  1. 1:4
  2. 4:1 (constant for all squares)
  3. Changes with the size of the square
  4. Depends on the area
Show answer and solution

Correct answer: B. 4:1 (constant for all squares)

Perimeter ÷ side = 4 always for a square (As per your syllabus, 's discussion before introducing π). The other options miss the constancy.

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