ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    Find the area of a ring formed by two concentric circles

    of radii 14 cm and 7 cm. Take pi = 22/7.
    A 462 cm┬▓ Correct Answer Incorrect Answer
    B 320 cm┬▓ Correct Answer Incorrect Answer
    C 418 cm┬▓ Correct Answer Incorrect Answer
    D 421 cm┬▓ Correct Answer Incorrect Answer

    Solution

    ATQ, Area = pi(R2 - r2) = (22/7)*(142 - 72) 142 = 196, 72 = 49 Difference = 196 - 49 = 147 Area = (22/7)147 = 2221 = 462 cm2

    Practice Next
    More Mensuration Questions

    Relevant for Exams:

    ask-question