Question

The given figure is a combined solid made up of a cylinder and a cone.the diameter of the base of the object is 6 cm,length of the cylindrical part is 116 cm and the total length of the solid object is 120 cm.find the total surface area of the solid object.

Answer 1

Step-by-step explanation:

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Answer 2

Answer:Therefore, T.S.A of combine solid is 2262.85$cm\^{2}$

Step-by-step explanation:

given,

Height of cylinder(h1)=116 cm

Total height of combine object(ht)=120 com

Diameter of base or circle(d)= 6 cm

T.S.A=?

now,

Height of cone(h2)=Total height of combine object-Height of cylinder

=120cm-116cm

=4 cm

Therefore, height of cone is 4 cm

radius=d/2

=6cm/2

=3cm

Therefore, radius is 3 cm

slint height(l)=$\sqrt{(h2)^{2}-(r)^{2} }$

=$\sqrt{4^{2} +3^{2} }$

=5 cm

Therefore,slint height is 5 cm

then,

T.S.A=π r(r+2h1+l)

=22/7*3(3+2*116+5)

=2262.85$cm\^{2}$