CBSE Class 10 Maths (Standard) 2015 · Paper 30/1 · Question 17

Surface Areas and Volumes 3 marks Medium

Due to sudden floods, some welfare associations jointly requested the government to get

100

tents fixed immediately and offered to contribute

50%

of the cost. If the lower part of each tent is of the form of a cylinder of diameter

4.2

m and height

4

m with the conical upper part of same diameter but of height

2.8

m, and the canvas to be used costs ₹

100

per sq. m, find the amount, the associations will have to pay. What values are shown by these associations? [Use

π = \frac{22}{7}

]

Answer

Canvas per tent

= 75.9

^{2}

; total cost

=

₹

7, 59, 000

; the associations pay

50%

=

₹

3, 79, 500

. They show values of generosity, social responsibility and concern for flood victims.

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