Math, asked by vineetakumar30, 1 year ago

In a cylinder, if radius is halved and height is doubled,find the total surface area.

Answers

Answered by raveesh255

the volume will remain same. this us as follows.
let radius of cylinder = 4 cm.
volume= 22/7 * 4*4*7
=352 cm cube.
if radius is halved= 4/2 = 2cm.
height is doubled= 7*2=
14cm.
volume = 22/7*2*2*14
volume= 176 cm cube.
it implies that the volume will be halved.

vineetakumar30: uhh... okay

vineetakumar30: it helped for sure

raveesh255: Yes first I have taken height 7 cm in first case. and then doubled it.

vineetakumar30: can you help me with the other 2 questions i posted too please ?:)

raveesh255: which questions.

raveesh255: name the questions i'll find them.

vineetakumar30: the surface area of a sphere is of radius 5 cm is five times the curved surface are of a conee

vineetakumar30: and internal and external diameters of a hollow hemispherical vessel...

raveesh255: please tell me the formula of surface area of cone.

vineetakumar30: (pi)(r)(r + l)

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