NCERT Solutions for Class 10 Maths Chapter 12 Exercise 12.2

CBSE X Related Questions

  • 1.

    On the day of her examination, Riya sharpened her pencil from both ends as shown below.

    The diameter of the cylindrical and conical part of the pencil is 4.2 mm. If the height of each conical part is 2.8 mm and the length of the entire pencil is 105.6 mm, find the total surface area of the pencil.


      • 2.
        A box contains 120 discs, which are numbered from 1 to 120. If one disc is drawn at random from the box, find the probability that
        (i) it bears a 2-digit number
        (ii) the number is a perfect square.


          • 3.

            The following data shows the number of family members living in different bungalows of a locality:
             

            Number of Members0−22−44−66−88−10Total
            Number of Bungalows10p60q5120


            If the median number of members is found to be 5, find the values of p and q.


              • 4.
                The given figure shows a circle with centre O and radius 4 cm circumscribed by \(\triangle ABC\). BC touches the circle at D such that BD = 6 cm, DC = 10 cm. Find the length of AE.
                 BC touches the circle at D such that BD = 6 cm


                  • 5.
                    Prove that: \[ \frac{\cos \theta - 2 \cos^3 \theta}{\sin \theta - 2 \sin^3 \theta} + \cot \theta = 0 \]


                      • 6.

                        Two identical cones are joined as shown in the figure. If radius of base is 4 cm and slant height of the cone is 6 cm, then height of the solid is

                          • 8 cm
                          • \(4\sqrt{5}\) cm
                          • \(2\sqrt{5}\) cm
                          • 12 cm

                        Comments


                        No Comments To Show