Mathematics
Grade9
Easy

Question

Find the altitude of the rhombus whose area is 315 cm² and its perimeter is 180 cm.

  1. 7
  2. 18
  3. 14
  4. 8

The correct answer is: 7


    Since, the perimeter of rhombus = 180 cm
    Therefore, side of rhombus = P over 4 equals 180 over 4 = 45 cm
    Now, area of rhombus = b × h
    ⇒ 315 = 45 × h
    ⇒ h = 315 over 45
    ⇒ h =7 cm
    Therefore, altitude of the rhombus is 7 cm.

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