Question

If the Perforations of the copper plate (circular holes) cover 72% of the curved surface area of the filter, then what will be the area of actual copper used in the outer protective layer of the larger filter?a) 1609.14 sq. cmb) 1158.58 sq.cmc) 394.24 sq.cmd)1013.76 sq.cm​

Answer 1

Answer:

b answer hahahahahajha