find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1: 2?	Options
A) 1 : 2	B) 2 : 3	C) 2 : 9	D) 2 : 1	E) 2 : 2
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>A</result>
find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1: 2?
divide(1, 2)
1 : 2 answer : a