Question

plzzz any genius herthisquestion no.8♥️♥️♥️♥️♥️

Answer 1

area=2πrh
=2*3.14*0.7*1
=4.396m sq.
pls vote it brainly pls last one

Answer 2

Given, height of a vessel = 1 m.

Given, Capacity of the vessel = 15.4 litres

                                                 = 15.4/1000

                                                 = 0.0154 m^3.

We know that Volume of a cylindrical vessel = πr^2h

⇒ 0.0154 =  (22/7) * (r)^2 * 1

⇒ (0.0154 * 7)/22 = r^2

⇒ r^2 = 0.0049

⇒ r = 0.07 m.

We know that Total surface area = 2πr(r + h)

⇒ 2 * 22/7 * 0.07(0.07 + 1)

⇒ 2 * 22 * 0.01 * 1.07

⇒ 0.4708 m^2.

Therefore, the area of the metal sheet needed = 0.4708 m^2.

Hope this helps!