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

    Question

    ∆ABC and ∆DEF are similar and their areas are

    respectively 25 cm2 and 36 cm 2 . If EF = 7.2 cm BC is?
    A 11.2 cm Correct Answer Incorrect Answer
    B 6 cm Correct Answer Incorrect Answer
    C 10.5 cm Correct Answer Incorrect Answer
    D 14 cm Correct Answer Incorrect Answer

    Solution

    Ratio of perimeter of similar triangles = ratio of the corresponding sides of similar triangles. (area of ∆ABC)/(area of ∆DEF)=(BC/EF) 2   25/36 = (BC/7.2) 2 (5/6) 2 = (BC/7.2) 2 5/6  = BC/7.2 BC = (5 × 7.2)/6 = 6 cm

    Practice Next
    More Geometry Questions

    Relevant for Exams:

    ask-question