Question

The diameter of the base of a right circular cylinder is 4.2 dm and its height is
1 dm. Find the area of the curved surface in cm.​

Answer 1

hii frnd, here is Ur answer>>>>>>>

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

diameter=4.2dm

radius will be=2.1dm in cm=2.1×10=21cm

height=1dm in cm=10cm

lateral surface area (CSA)=2πrh

=2×22/7×21×10

=44×30

=1320cm^2

hope this helps....

Answer 2

Answer:

CSA=2πrh

d=4.2m

r=4.2÷2=2.1m.

2.1×100=210cm

CSA=2×22÷7×210×1=1320

CSA=1320cm