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Rasheed got a playing top (lattu) as his...

Rasheed got a playing top (lattu) as his birthday present, which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere. The entire top is 5 cm in height and the diamete

A

`40.225 cm ^(2)`

B

`41.625 cm ^(2)`

C

`39.6 cm ^(2)`

D

`38.225 cm ^(2)`

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Rasheed got a playing top (lattu) as his birthday present,which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere (see figure). The entire top is 5 cm in height and the diameter of the top is 3.5 cm. Find the area he has to colour. (take pi = 22/7)

Rasheed got a playing top (lattu) as his birthday present, which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere (see figure). The entire top is 5 cm in height and the diameter of the to is 3.5 cm. What will be the radius of hemispherical portion having diameter 3.5cm ?

Hanumappa and his wife Gangavva are busy making Jaggery out of sugar-cane. They have processed the sugarcane juice to make the molasses which is poured into moulds of the shape shown in Fig 16.72. It will be cooled to solidify in this shape to be sent to the market. Each mould is in the sh ape of a frustum of a cone having the diameters of its two circular ends as 30 cm and 35 cm and the height of the mould is 14 cm. If each c m^3 of molasses weighs about 1.2 gm, find the weight of molasses that can be poured into each mould (Take pi=22//7 )

A shuttle cock used for playing badminton has the shape of a frustum of a cone mounted on a a hemisphere.The diameters of the ends of the frustum are 5cm and 2cm ; the height of the entire shuttle cock is 7cm. Find the external surface area.

OSWAL PUBLICATION-SURFACE AREAS AND VOLUMES -SELF ASSESSMENT-2 (CASE STUDY BASED QUESTIONS)
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