Which statements correctly identify a water molecule structure? Water molecules are positively charged. Water molecules have polar covalent bonds. Water molecules have nonpolar covalent bonds. Water molecules are made of a hydrogen atom and two oxygen atoms. Water molecules have a partial positive charge and partial negative charge. Water molecules consist of an oxygen atom bonded to two hydrogen atoms.

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.   

B) an efficient process

The correct answer would b e)