Answers given as equation

Hello,

I have the equation;

% Radius = r

r = 10*u.ft;

SurfaceAreaOfASphere = (4*pi*r^2)

Returning an answer of;

400*pi*[ft]^2

But I want an answer without pi. In a sense evaluate the expression, any ideas?

[madhan ravi]

whats the value of u?

Answer 1

[John D'Errico]

Do you mean this?

vpa(SurfaceAreaOfASphere)
ans =
1256.6370614359172953850573533118*[ft]^2