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CBSE Class 9 Mensuration: Perimeter and Area — practice questions — page 3

Explore 103 free Mensuration: Perimeter and Area questions in CBSE Class 9 Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Mensuration: Perimeter and Area questions and exercises with answers

Showing questions 61–90 of 103.

Which shapes are always cyclic?Read the answer and worked solution →The length of a semicircle of radius r is:Read the answer and worked solution →An arc's length depends on the angle it subtends at the:Read the answer and worked solution →Match the perimeter formulaRead the answer and worked solution →Perimeter or area?Read the answer and worked solution →True or false about measuring spaceRead the answer and worked solution →Pick the formulaRead the answer and worked solution →Complete the circle factsRead the answer and worked solution →Order the steps of Heron's formulaRead the answer and worked solution →Perimeter and area bingoRead the answer and worked solution →True or false about polynomialsRead the answer and worked solution →The outer surface of a cuboid is made up of how many rectangles?Read the answer and worked solution →The rectangular regions bounding a cuboid are called its:Read the answer and worked solution →The surface area of a cuboid with edges l, b and h is:Read the answer and worked solution →In the cuboid formula, l, b and h are its three:Read the answer and worked solution →A cuboid whose length, breadth and height are all equal is a:Read the answer and worked solution →Stacking circular sheets of paper vertically produces a right circular:Read the answer and worked solution →Solids generated by stacking congruent figures are called:Read the answer and worked solution →A cone is an example of a solid that is not a prism but a:Read the answer and worked solution →A cone can be generated by rotating a triangle that is:Read the answer and worked solution →The distance from the tip of a cone to a point on the rim of its base is the:Read the answer and worked solution →The curved surface area of a cone is pi times its slant height times its:Read the answer and worked solution →The slant height, height and base radius of a cone are linked by the theorem of:Read the answer and worked solution →In the cone triangle, the slant height plays the part of the:Read the answer and worked solution →The surface area of a sphere of radius r is:Read the answer and worked solution →Cutting a sphere into two equal halves gives two:Read the answer and worked solution →The curved surface area of a hemisphere is what fraction of the sphere's?Read the answer and worked solution →The curved surface area of a hemisphere of radius r is:Read the answer and worked solution →A solid hemisphere has how many faces?Read the answer and worked solution →The total surface area of a hemisphere of radius r is:Read the answer and worked solution →

Worked practice questions

Which shapes are always cyclic?

  1. Every polygon
  2. Rectangles
  3. All triangle
  4. Any 4-sided
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Correct answer: B. Rectangles

1. A cyclic figure has all its corners on one circle. 2. The four corners of a rectangle lie on its circumcircle. 3. So all rectangles are cyclic. 4. The answer is rectangles. _Source: syllabus Mathematics, Ch 6 'Measuring Space: Perimeter and Area'_

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The length of a semicircle of radius r is:

  1. 4 pi times r
  2. pi r squared
  3. pi times r
  4. 2 pi times r
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Correct answer: C. pi times r

1. The full circumference is 2 pi r. 2. A semicircle is half of the circle. 3. So its arc length is pi times r. 4. The answer is pi times r. _Source: syllabus Mathematics, Ch 6 'Measuring Space: Perimeter and Area'_

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An arc's length depends on the angle it subtends at the:

  1. Corner
  2. Border
  3. Chords
  4. Centre
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Correct answer: D. Centre

1. A quarter circle takes 90 degrees of the full turn. 2. A semicircle takes 180 of the 360 degrees. 3. So the arc length depends on the angle at the centre. 4. The answer is the centre. _Source: syllabus Mathematics, Ch 6 'Measuring Space: Perimeter and Area'_

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More Mathematics topics

Sequences and ProgressionsCoordinate GeometryNumber SystemsPolynomials and Algebraic IdentitiesStatistics and ProbabilityTriangles, Circles and Geometry