two cones with same base radius 15 cm and height 20 cm are joined together along their base. Find the surface area of the shape so formed. ( use π=3.14)?

two cones with same base radius 15 cm and height 20 cm are joined toge

1.	two cones with same base radius 15 cm and height 20 cm are joined together along their base. Find the surface area of the shape so formed. ( use π=3.14)?
Answer» The figure will look somewhat like this. By Pythagoras Theorem, ${l}^{<klux>2</klux>} = {h}^{2} + {r}^{2} \\ {l}^{2} = {15}^{2} + {20}^{2} \\ {l}^{2} = 225 + 400 \\ l = <klux>25</klux>$ So, the TOTAL Surface AREA of the SHAPE so formed = $2 \pi rl$ = 2 × 3.14 × 15 × 25 = 2355 so. Cm

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two cones with same base radius 15 cm and height 20 cm are joined together along their base. Find the surface area of the shape so formed. ( use π=3.14)?

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