Question

a cylinder has radius 3.5 cm and height 20 cm. find the total surface area of the cylinder
,if it is closed at one end​

Answer 1

Answer:

Step-by-step explanation:

TSA OF CYLINDER IF IT IS CLOSED FROM ONE END=

CSA OF CYLINDER+AREA OF ONE CIRCLE

=2πRH+π(R)(R)

= {2×3.14×3.5×20}+{3.14×3.5×3.5

=478.31cm sq.

Answer 2

Answer:

Step-by-step explanation:

TSA OF CYLINDER IF IT IS CLOSED FROM ONE END=

CSA OF CYLINDER+AREA OF ONE CIRCLE

=2πRH+π(R)(R)

= {2×3.14×3.5×20}+{3.14×3.5×3.5

=478.31cm sq.

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