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  • Two cones with same base diameter 16 cm and height 15 cm are joined together along their bases. Find the surface area of the shape so formed.      

Two cones with same base diameter 16 cm and height 15 cm are joined together along their bases. Find the surface area of the shape so formed.

 

 

 

 
 
 
 
 

Answers (1)

The surface area of image formed = Curved surface area of both cones.

Diameter of cone = 16 \; cm

Radius of cone = 8 \; cm

height of cone = 15 \; cm

\text{Curved surface area of cone}=\pi r\sqrt{h^2+r^2}

=3.14 \times 8 \times \sqrt{15^2+8^2}

=427.04 \; cm^2

\text{So, curved surface area of both cones}= 2 \times \text{C.S.A of 1 cone}

                                                                                  = 2 \times 427.04

                                                                                  = 854.08 \; cm^2

Hence the surface area of the shape so formed is 854.08 sq. cm

Posted by

Ravindra Pindel

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