Cylinder - basics

Cylinder with base radius r = 45 dm and height h=22 dm. Calculate:

Correct result:

Area of base A1 =  6361.7 dm2
Cylinder volume V =  139958 dm3
Perimeter of base p =  282.7 dm
Area of shell A2 =  6220.4 dm2
Surface area A3 =  18943.8 dm2

Solution:

A1=π452=6361.7 dm2
V=A122=139958 dm3
p=2π45=282.7 dm
A2=p22=6220.4 dm2
A3=A2+2A1=18943.8 dm2



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