Page 2 - Home Assignment-3- Ch-13 SA and Volume(Cone)
P. 2

HOME ASSIGNMENT-2 ANSWERS
               1.    37 cm

               2.    8712 m = 1244.57m (approx.)
                           2
                                          2
                      7
               3.    4: 1
               4.    Solution:

                     Given that,

                     Diameter of two coins are equal.
                     Therefore, their radius are equal.

                     Let r1 = r2 = r
                                                    st
                     Therefore, slant height l1 of 1  cone = 4x
                                                  nd
                     Similarly slant height l2 of 2  cone = 3x
                                         1       1    1
                     Therefore,        =
                                         2       2    2
                                          ×  ×4  
                                              =
                                          ×  ×3  
                                              = 4/3

                                       Hence ratio is 4: 3


                                                      2
               5.    Radius(r)=7 cm , Area=462 cm
               6.    Solution: Here, Base radius (r) = 6 m
                                               Height (h) = 8 m









                                                            2
   1   2   3