Question

A combined solid made up of a cylinder of radius 3cm and length h cm and a hemisphere with the same radius as the cylinder has volume of 792cm³. Find the value of h.

Answer 1

Answer:

ANSWER

For all figures,

r=7 cm

l (slant height)= h (height of cylinder)=4 cm

T.S.A of the figure= C.S.A of Cone+C.S.A of cylinder +C.S.A of hemisphere.

CSA of cone: πrl=(3.14)×(7cm)×(4cm)=87.92 cm

2

CSA of cylinder: 2πrh=(2)×(3.14)×(7cm)×(4cm)=175.84 cm

2

CSA of hemisphere: 2πr

2

=(2)×(3.14)×(7cm)

2

=307.72 cm

2

Adding all: TSA of figure= 571.48 cm

2 so height is 28cm

Answer 2

Step-by-step explanation:

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