Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is $4.2$ m in diameter and $4.5$ m high.

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Solution

Height $(h)$ of cylindrical tank $= 4.5$ m
Radius $(r)$ of the circular end of cylindrical tank $= \frac{4.2}{2} = 2.1$ m
Curved Surface Area of tank $= 2 π r h$
$= 2 \times \frac{22}{7} \times 2.1 \times 4.5 m^{2}$
$= 59.4 m^{2}$

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Q. The lateral or curved surface area of a closed cylindrical petrol storage tank that is

4.2

m in diameter and

4.5

m high.

Q. Find the total surface area of a closed cylindrical petrol storage tank whose diameter 4.2 m and height 4.5 m.

Q. Find
(i) The lateral or curved surface area of a closed cylindrical petrol storage tank that is

4.2 m

in diameter and

4.5 m

high.
(ii) How much steel was actually used, if

\frac{1}{12}

of the steel actually used was wasted in making the tank?

Find the lateral curved surface area of a cylindrical petrol storage tank that is 4.2 m in diameter an 4.5 m high. How much steel was actually used, if $\frac{1}{12}$ of steel actually used was wasted in making the closed tank?

Q. Find:

(i)

The lateral or curved surface area of a closed cylindrical petrol storage tank that is

4.2

m in diameter and

4.5

m high. [Assume

π = \frac{22}{7}

]

(i i)

How much steel was actually used if

\frac{1}{12}

of the steel actually used was wasted in making the tank?

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Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.

Height(h) of cylindrical tank=4.5mRadius(r) of the circular end of cylindrical tank=4.22=2.1mCurved Surface Area of tank=2πrh=2×227×2.1×4.5m2=59.4m2

Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is $4.2$ m in diameter and $4.5$ m high.

Height $(h)$ of cylindrical tank $= 4.5$ m
Radius $(r)$ of the circular end of cylindrical tank $= \frac{4.2}{2} = 2.1$ m
Curved Surface Area of tank $= 2 π r h$
$= 2 \times \frac{22}{7} \times 2.1 \times 4.5 m^{2}$
$= 59.4 m^{2}$