1.

A vassel is in the from of a hemispherical bowl surmounted by a hollow cylinder of same diameter the diameter of the hemispherical bowl is 14cm and the total height of the vessel is 13cm find the total surface area of the vessel​

Answer»

Answer:

1144 cm SQUARE

Step-by-step explanation:

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 = 14/2   = 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+2r square)

= 4πr(r+h )

= 4× 22/7 ×7×(6+7)cm2   = 1144cm2



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