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  • Question

  • The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by


  • Options
  • A. 20%
  • B. 25%
  • C. 30%
  • D. 40%

  • Correct Answer
  • 20% 

    • Area problems

    Search Results

    • 1. The length of the base of an isosceles triangle is 2x2y+4z, and its perimeter is 4x2y+6z. Then the length of each of the equal sides is

    • Options
    • A. x+y
    • B. x+y+z
    • C. 2(x+y)
    • D. x+z
      • Discuss
    • 2. The length of the diagonal and the breadth of a rectangle are 17 cm and 8 cm respectively. Find its perimeter (in cm).

    • Options
    • A. 92
    • B. 46
    • C. 42
    • D. 84
      • Discuss
    • 3. The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

    • Options
    • A. 17 cm
    • B. 11 cm
    • C. 15 cm
    • D. 13 cm
      • Discuss
    • 4. The area of the largest triangle that can be inscribed in a semicircle of radius 6m is

    • Options
    • A. 36 sq.m
    • B. 72 sq.m
    • C. 18 sq.m
    • D. 12 sq.m
      • Discuss
    • 5. One of the internal angle of a rhombus is 60° and length of its shorter diagonal is 8 cm. What is the area of the rhombus?

    • Options
    • A. 64?3 sq cm
    • B. 32?2 sq cm
    • C. 64?2 sq cm
    • D. 32?3 sq cm
      • Discuss
    • 6. Area of 4 walls of a cuboid 400 sq cm, its length is 15 cm and height is 8 cm. What is its breadth (in cm)?

    • Options
    • A. 12
    • B. 20
    • C. 24
    • D. 10
      • Discuss
    • 7. ?ABC is similar to ?PQR. If ratio of perimeter of ?ABC : perimeter of ?PQR is 5:9 and if PQ = 45 cm, then the length of AB (in cm) is?

    • Options
    • A. 15
    • B. 20
    • C. 25
    • D. 16
      • Discuss
    • 8. D and E are points on side AB and AC of ?ABC. DE is parallel to BC. If AD:DB = 2:3, what is the ratio of area of ?ADE and area of quadrilateral BDEC?

    • Options
    • A. 4 : 21
    • B. 4 : 25
    • C. 4 : 29
    • D. 4 : 9
      • Discuss
    • 9. If the parallel sides of a trapezium are 8 cm and 4 cm, M and N are the mid points of the diagonals of the trapezium, then length of MN is

    • Options
    • A. 12 cm
    • B. 6 cm
    • C. 1 cm
    • D. 2 cm
      • Discuss
    • 10. An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is

    • Options
    • A. 2?3 cm
    • B. 3?2 cm
    • C. 4?3 cm
    • D. ?3 cm
      • Discuss

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