4. The ratio of radii two cylinders with equal height is 2 : 3. Then, the ratio of their curved surface
area is________
a)4.9
b)2.3
c) g. 27
d) 3.2
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4. The ratio of radii two cylinders with equal height is 2 : 3. Then, the ratio of their curved surface
area is________
a)4.9
b)2.3
c) g. 27
d) 3.2
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Answer:
2:3
may be answer is b
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