S Ndapuka Limited is in the business of supplying solar geysers to homesteads in the Oshana region. The solar geysers are imported from China. It costs the company N$5, 000 per each order placed. The expected sales for 2022 is 220 000 solar geysers. The holding cost is expected to be N$500 per unit per annum. One geyser is sold to the local customers at N$7,000. The company operates a 280-day year.

With the information above calculate: i) EOQ ii) Length of the order cycle iii) Annual holding cost iv) Number of orders per annum