An electric geyser is cylindrical in shape comma having a diameter of 35 cm and height 1.2 metre. Neglecting the thickness of its wall calculate:-1.its outer lateral surface area,2.its capacity in litres.
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Answered by
110
Given, the diameter of cylindrical geyser (d) = 35cm
Now, radius of cylindrical geyser = r = d/2 = 35/2 cm = 17.5 cm
Also, height = h = 1.2 m = 120 cm
i)
curved or lateral surface area of cylinder = 2*pi*r*h
= 2*22/7*17.5*120
=13200 cm^2
ii)
capacity or volume of the cylinder= pi*r^2*h
= 22/7*(17.5)^2*120
=115500 cm^3
Now, we know that 1 cm3 = 0.001 liters
⇒ 115500 cm3 = 115500 × 0.001 liters = 115.5 liters
Hence, capacity of the cylinder is 115.5 liters.
Now, radius of cylindrical geyser = r = d/2 = 35/2 cm = 17.5 cm
Also, height = h = 1.2 m = 120 cm
i)
curved or lateral surface area of cylinder = 2*pi*r*h
= 2*22/7*17.5*120
=13200 cm^2
ii)
capacity or volume of the cylinder= pi*r^2*h
= 22/7*(17.5)^2*120
=115500 cm^3
Now, we know that 1 cm3 = 0.001 liters
⇒ 115500 cm3 = 115500 × 0.001 liters = 115.5 liters
Hence, capacity of the cylinder is 115.5 liters.
Answered by
4
Step-by-step explanation:
For ii, take height - 1.2m and convert the radius from 17.5 CM to M (0.175m)
and then calculate the volume by the formula πr²h
Hope it helped ya :)
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