Question

meters.
9. What length of tarpaulin 3 m wide will be required to make a conical tent of height 8m
and base radius 6m? Assume that extra length of material that will be required for stitching
margins and wastage in cutting is approximately 20 cm (use n=3.14)
1. A Joker's cap is in the form of a right circular cone of base radius 7 cm and height 27cm.
Find the area of the sheet required to make 10 such caps.​

Answer 1

Answer:

9 - h = Height of tent = 8 m

r = Base radius = 6 m

Therefore,

l=

r

2

+h

2

=10 m

Curved surface area of the cone = πrl=3.14×6×10 m

2

Therefore, length of 3 m wide tarpaulin required =

3

3.14×6×10

=62.8 m

Extra length required = 0.2 m

Therefore, total length required = 63 m

1 - Given Radius =7 cm and height =27 cm

Then slant height l=

(27)

2

+(7)

2

=

729+49

=

778

=27.84 cm

Then curved surface area conical cap = π×r×l=

7

22

×7×27.84=612.48m

2

Then sheet required for make 10 caps = 612.48×10=6124.8 m

2

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Answer 2

Answer:

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