📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      The ratio of the height of a room and its semi-perimeter

      is 2:5. The cost of applying 50cm wide paper at the rate of Rs 8/meter on the remaining walls except 15 square meters of doors and windows is Rs 1040. What is the height of this room?  type-ssc
      A 14meter Correct Answer Incorrect Answer
      B 4meter Correct Answer Incorrect Answer
      C 6meter Correct Answer Incorrect Answer
      D 8meter Correct Answer Incorrect Answer

      Solution

      Let the height of room =2x meter and (l + b) =5x meter Length of paper =1040/8 =130meter width of paper =50cm =50/100=1/2meter Area of paper = 130×1/2 =65m2 Area of four walls= (65+15) =80m2 2(l+ b) ×h =80 2(5x) ×2x=80 20x2 =80 X=2 Height of room =2x=2×2=4meter.

      Practice Next
      More Mensuration Questions

      Relevant for Exams:

      ask-question