Question

toy in the form of hemispherical bowl mounted by a hollow cylinder of diameter 7 cm and total height of toy is 13 cm what is a height of cylinder cal part of toy​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Let the radius and height of cylinder be r cm and h cm respectively.

Diameter of the hemispherical bowl = 14 cm

∴ Radius of the hemispherical bowl =

Radius of cylinder = r=

2

14

cm=7cm

Total height of the vessel = 13 cm.

∴ Height of the cylinder, h=13 cm - 7 cm = 6 cm

Total surface area of the vessel=

2(CSA of cylinder + CSA of hemisphere)

Since, the vessel is hollow

=2(2πrh+2πr

2

)

=4πr(h+r)

=4×

7

22

×7×(6+7)cm

2

=1144cm