Thread: Help...Linear Approximation..

Approximations: A circular cylindrical tank,
V= πr^2h of internal radius 12m and height 20m is to be painted on the inside: top,bottom and sides,with paint of thickness 0.05cm.


Use the linear approximation of ∆V to calculate how many litres of paint (1 litre=1000cm^3) are required?

convert all units to cm

Originally Posted by Raidan

Approximations: A circular cylindrical tank,
V= πr^2h of internal radius 12m and height 20m is to be painted on the inside: top,bottom and sides,with paint of thickness 0.05cm.


Use the linear approximation of ∆V to calculate how many litres of paint (1 litre=1000cm^3) are required?

convert all units to cm

so
Here, dr and dh are the thickness of the paint, 0.05 cm.