Math, asked by ankushsaini23, 8 months ago

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✍️ Water is flowing at 7m/sec through a circular pipe of internal diameter 2 cm into a cylindrical tank the radius of whose base is 40cm. Find the increased in water level in 30 minutes. OR A toy is in the form of a cone mounted on a hemisphere of radius 3.5cm. If the total height of the toy is 15.5cm, find its total surface area.(use =22/7)
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Answers

Answered by ishwarsinghdhaliwal

Q.A toy is in the form of a cone mounted on a hemisphere of radius 3.5cm. If the total height of the toy is 15.5cm, find its total surface area.

Solution. See attachment

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Answered by Anonymous

Water is flowing at the rate of 7 m/s.

o length of pipe in which the water has traveled,

h = 7(1800) = 12600m

Radius of the pipe(r)= 1cm

Radius of the cylinder(R)= 40 cm

let the height of the water in the tank H

So,

Volume of water coming from the pipe = Volume of water in the cylindrical tank.

πr^2h = πR^2h

H = {(0.01)^2 X 12600}/(0.4)^2 = 7.875m (ans)

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