Hello, It would be really helpful if anyone can give me all the imp. formulaes for Surface Areas & Volumes.. I couldn't find it in many sources.. Thanks a ton in advance !

with this the formula for frustum if ur in 10th
u will get 2 r becuz u hav 2 radius given in the question:
​vol of frustum = 1/3*pie*h[R^2 + r^2 + Rr]
csa of frustum = pie*l[R + r]
tsa of frustum = pie*l[R + r] + pie*r^2