Math, asked by binaroy032, 1 year ago

csa of a cone is 308cm² and its slant height is 14cm. Find 1)Radius of the cone 2)Height of the cone 3)T.S.A of the cone 4)Volume of the cone​

Answers

Answered by dhanalakshmis2524
1

Answer:

1) r = 7cm   ,    2) h = 12.12cm  ,     3)  462cm²      4)  622.16cm³

Step-by-step explanation:

csa of a cone = 308cm²  

 π r l          = 308

22 /7  x r x 14  = 308

            r         = 308 / 44

             r = 7cm

2) height of the cone  =  √l² - r²

                                    =  √14² - 7²

                                    =  12.12 cm

3)  T.S.A of the cone  =  π r ( l +r)

                                   =  22 /7   x  7 ( 14 + 7)

                                  = 22 /7  x 7 x 21

                                 = 462 cm²

4) volume of the cone  =  1/3 π r² h

                                      =  1/3  x 22/7  x 7 x7 x 12.12

                                     =   622.16cm³

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