CBSE Class 10 Maths (Standard) 2023 · Paper 30/C/B · Question 38

Surface Areas and Volumes 4 marks Hard

For the Kumbh Mela, Uttar Pradesh Government prescribed the following for the contractors to pitch the tents. Each tent must be of cylindrical base of radius

21

m and height

5

m, surmounted by a conical part of height

20

m. The cylindrical part must have a white coloured thick fabric costing Rs

60

per square meter, while the conical part must have PVC coated blue fabric costing Rs

70

per square meter. Based on the above information, answer the following questions:

(a)How much blue PVC (in sq.m) is required and what will be its total cost?
(b)How much white fabric (in sq.m) is required and what will be its total cost?

aHow much blue PVC (in sq.m) is required for the conical part and its total cost?[2]
bHow much white fabric (in sq.m) is required for the cylindrical part and its total cost?[2]

Answer

Blue PVC

= 1914

^{2}

(Rs

133980

); white fabric

= 660

^{2}

(Rs

39600

)

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CBSE Class 10 Maths (Standard) 2023 · Paper 30/C/B · Question 38

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