The required cross-sectional area of cables in a cable-stayed bridge can be estimated by keeping cable stress just at the allowable stress, while supporting the weight of the bridge deck. Say there is a pair of cables, one on each side attached every 20 m and that the total loading on the deck is 22 Mg/m, if each cable has an allowable stress of 325 MPa, and is oriented at 35 degrees from the vertical, determine the minimum acceptable cable cross-sectional area. If the cable consists of 10mmm strands, how many strands are needed?