Question

A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is required? ​

Answer 1

Question:

A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is required?

Answer:

${440 cm}^{2}$

Given:

1. Radius = 7 m
2. Height = 3 m

To Find:

• Sheet of metal is required.

Solution:

We know that,

● Area of Closed Cylinder = Curved Surface Area of Cylinder + 2(Area of Circle)

$\implies 2πrh + 2{πr}^{2}$

$\implies 2πrh(r + h)$

Here,

$π = \frac{22}{7}$

Substituting the values in the Formula.

We get,

$2 \times \frac{22}{\cancel7} \times \cancel7(7 + 3)$

$\implies 2 \times 22(10)$

$\implies 44 \times 10$

$\huge \boxed{{440 cm}^{2}}$

Answer 2

Answer:

Refer to the attachment plzzzzz

Step-by-step explanation:

I hope I am helpful....for uhhh....

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