How to convert to Excel formula?

Please help, im not sure about this Excel formula. I need to enter the following equation into the formula/function bar in Microsoft Excel but not sure if its completely right . V = 0.000045 + 1/4π0.09^2[0.15+0.035-(0.035cos180+√( 0.15^2-0.035^2sin^2*180))] I think i got most of it right, but dont know how... show more Please help, im not sure about this Excel formula.
I need to enter the following equation into the formula/function bar in Microsoft Excel but not sure if its completely right .

V = 0.000045 + 1/4π0.09^2[0.15+0.035-(0.035cos180+√( 0.15^2-0.035^2sin^2*180))]

I think i got most of it right, but dont know how to do the Pi, Cos, Sin or the square root.
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