Question

an open cylindrical tank has a base of diameter 4.2m .If the height of the tank is 5.8cm .Find how many sq.m of steel sheet required for tank​

Answer 1

Answer:

First you have to find curved surface area and base area of the cylinderical sheet then add it....

That addition will be the required steel sheet...

Answer 2

$\fontsize{18}{10}{\textup{\textbf{The tank requires 28.4856 sq.m of steel sheet.}}}$

Step-by-step explanation:

The diameter of the base of the cylindrical tank is 4.2 meters and the height of the tank is 5.8 cm.

If r and h represents the radius of the base and height respectively of the tank, then we have

$r=\dfrac{4.2}{2}=2.1~\textup{m},\\\\\\h=5.8~\textup{cm}=\dfrac{5.8}{100}~\textup{m}=0.058~\textup{m}.$

Therefore, the number of square meters of steel sheet required for the tank is given by

$\textup{Surface are of the cylindrical tank}\\\\=2\pi r(h+r)\\\\=2\times\dfrac{22}{7}\times2.1(2.1+0.058)\\\\=44\times0.3\times2.158\\\\=28.4856.$

Thus, the tank requires 28.4856 sq. meters of steel sheet.