Question 854201
Let the radius be r and height be h cm.
h = diameter = 2r
Now,
    2*22/7*r(r+h)=200
 => r(r+2r)=200*7/2*22
 => 3r^2 = 100 * 7/22
 => r^2 = 700/66 
 => r = 0.4 cm (approx.)
Ans: Radius is 0.4 cm (approx.)