Fraction to decimal -> Just divide out 7/25 = .28 Decimal to fraction -> Put the decimal over 100 and simplify -> 28/100 -> 7/25 Fraction to percentage -> Divide out then multiply by 100 .28 * 100 = 28 -> 28% Percentage to Fraction -> Divide by 100 then put it over 100 -> 28/100 -> 7/25
The diameter is 24 since if you ÷ it by 2 you get 12 to get area it is radius squared so 12 × 12= 144×pi which is 3.14= 452.16 mm you can even check in a calculator