a cylinder is inserted in a sphere d / h = 2 / 3 . find the surface area of the cylinder ?
take r = 1 , h = 3 = 2 * 3.14 * r * r + 2 * 3.14 * r * h = 2 * 3.14 * r ( r + h ) = 2 * 3.14 * 1 ( 1 + 3 ) = 2 * 3.14 ( 4 ) = 25.12 answer : c
multiply(add(divide(2, const_2), 3), multiply(const_2, const_pi))