Question

v. The cost of canvas required for making the tent, if the canvas cost * 70 per sq. m.
a * 40,000
b. *38570
c*38575
d*48470​

Answer 1

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Your answer

Diameter of the tent =8 m

r=

2

d

=

2

8

=4 m

Height =3 m

Slant height (l)=

h

2

+r

2

=

3

2

+4

2

=

25

=5 m

Therefore, curved surface area of tent =πrl

=

7

22

×4×5=

7

440

m

2

Volume of the cone =

3

1

πr

2

h

=

3

1

×

7

22

×4×4×3

=

7

352

m

3

(i) Cost of canvas required for the tent

= C.S.A. × Unit cost

=

7

440

×70

= Rs. 4400

(ii) Number of persons can be seated in the tent

=

air required for each

Volume of conical tent

=

7

352

÷3.5

=

7

352

×

3.5

1

=14.36

=14 men (approx.)