Question

Diameter of the cone is 40.5cm and its shans height 10cm.find tsa and csa

Answer 1

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Answer 2

1. Answer:If diameter is 40.5cm               r=40.5/2=20.25cm    Its Height =√l²-r²                       √10²-20.25²                       √100-410.06                       √310.06=17.60cm    T. S. A of cone =πr (l+r)                             = 22/7×20.25 (17.60+20.25)                             =22/7×20.25 (37.85)                             =22×2.89×37.85                             =2331.56 C.S.A of cone=πrl                        =22/7×20.25×10                        =22×2.89×10                       =635.8cm