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surface area of cylinder , diameter=90 , height=20

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surface area

Oct 20th, 2017

The formula for calculating surface area of a cylinder is 2πr^2+2πrh

=2*π*45^2+2*π*45*20

=18,378.3170 square units (4decimal places)


Apr 26th, 2015

is this the answer in pi form ?

Apr 26th, 2015

No I have put the value of pi in the answer in pie form the answer will be .

=2*π*45^2+2*π*45*20

=5850π square units

Apr 26th, 2015

thank you very much 

Apr 26th, 2015

You are much welcome

Apr 26th, 2015

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