he curved surface area of a cylindrical pillar is 264m2 and its volume is
924m3
.The ratio of its diameter to its height is.
a) 3:7 b)7:3 c)6:7 d)7:6
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Answer:
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Step-by-step explanation:
Given: Curved Surface Area of cylinder = 264m
2
Volume of cylinder = 924m
3
CSA of cylinder = 2πrh
264 = 2×
7
22
×r×h
r×h=42
h=
r
42
...(1)
Volume of cylinder = πr
2
h
924=
7
22
×r
2
×
r
42
924=
7
22
×r×42
r=
22×42
924×7
r=7m.
Radius is 7m
diameter is 14m
Height of cylinder =
7
42
=6m
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