RRB Group D 10-Dec-2018 Shift 1 Solved Paper

Question : 46 of 100

Marks: +1, -0

A tent is such that the bottom part is a cylinder to a height of 24 m with a diameter of 126 m; and the top part is a cone with the same diameter of the base of 126 m and slant height of 80 m. The canvas is 8 m wide. Calculate the length of the canvas required to make the tent.

3020 m
31618 m
3296 m
3190 m

Validate

Solution:

Surface area of tent=

πrl+2πrh

=π×63×80+2×π×63×24

=63π×128=25344

Length of canvas=

{25344}/8=3168 \m

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