Question

the diameter of the base of a right circular cylinder is 4.2 decimeter and its height is 1 decimeter find the area of the curved surface in cm square

Answer 1

Answer:

1320cm^2

Step-by-step explanation:

1dm=10cm

So,4.2dm=42cm

1dm=10cm

Now,diameter=42cm

Radius=21cm

CSA of cylinder=2*pi*r*h

=2*22/7*21*10

=2*22*3*10

=44*3*10

=1320cm^2

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