A pump is to transport the water. The maximum power required through the shaft is 62.8 W, when it rotates at 100 rpm, What will be the diameter of shaft (in cm) if the maximum permissible shearing stress is 100 MN/m 2 ? (π = 3.14)

• A. \({\left( {\frac{{96}}{{314}}} \right)^{\left( {\frac{1}{3}} \right)\;}}\)
• B. \({\left( {\frac{{196}}{{314}}} \right)^{\left( {\frac{1}{3}} \right)\;}}\)
• C. \({\left( {\frac{{296}}{{314}}} \right)^{\left( {\frac{1}{3}} \right)\;}}\)
• D. \({\left( {\frac{{396}}{{314}}} \right)^{\left( {\frac{1}{3}} \right)\;}}\)