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


    Question

    Two circles of radii 8 cm and 3 cm have their centers 15

    cm apart. What is the length of the common internal tangent? 
    A 12 cm Correct Answer Incorrect Answer
    B 13 cm Correct Answer Incorrect Answer
    C 14 cm Correct Answer Incorrect Answer
    D 15 cm Correct Answer Incorrect Answer

    Solution

    The length of the common internal tangent is given by √(d² - (r₁ - r₂)²), where d is the distance between the centers, r₁ and r₂ are the radii of the circles. Substituting the values, √(15² - (8 - 3)²) = √(225 - 25) = √200 = 14.14 ≈ 14 cm. Correct answer: c) 14 cm

    Practice Next
    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call