Question

the diameter of the base of a right circular cylinder is 4.2 dm and it is Heights is 1dm find the area of curved surface in centimetre square

Answer 1

1320 cm² is your answer
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Answer 2

Answer:

1320 cm^2

Step-by-step explanation:

Diameter=4.2 dm

Radius=Diameter/2 = 4.2dm/2 = 2.1 dm

Radius = 2.1 dm = 2.1 × 10 = 21 cm

Height = 1 dm = 1×10 = 10 cm

L.S.A. of cylinder =

$2{\pi}rh|$

=2×22/7×21×10

=2×22/7×210

=44/7×210

=44×30

=1320cm^2