Question

The volume of a cylindrical vessel closed earth both ends is 22, 000cm3. if its height is 70cm, how many square CM of metal sheet will be e required to build it?​

Answer 1

$\bf\huge\underline{\underline{ Given :- }}$

• Volume of cylindrical vessel is 22000 cm³

• height is 70 cm

$\bf\huge\underline{\underline{ To \: Find:- }}$

• area of square sheet used to build it

$\bf\huge\underline{\underline{ Answer :- }}$

• Volume of cylinder = πr²h

• $\red{\implies}$ πr² × 70 = 22000

• $\red{\implies}$ r² = $\frac{22000}{70×π}$

• $\red{\implies}$ r² = 100.09 ≈ 100 [approx]

• $\red{\implies}$ r = 10 cm

$\rule{10cm}{0.05cm}$

• TSA = 2πr² + 2πrh

• $\red{\implies}$ TSA = 2×3.14 × 100 + 2×3.14×10 × 70

• $\red{\implies}$ TSA = 5024 cm²

$\rule{10cm}{0.05cm}$

ie , 5024 cm² sheet is needed

Answer 2

Answer:

Refer to the above attachment..