Question

The circumference of the base of a 12 metre high conical tent is 66 cm find the volume of air contained in it

Answer 1

Circumference of base =66m
Hight of tent=12m
Circumference of circle= 2πr
66=2×22/7×r
66×7/2×22=r
r =10.5m
Volume of come =1/3πr^2h
=1/3×22/7×10.5×10.5×12
=1386m^3

Answer 2

Answer:

138600 cubic cm

Step-by-step explanation:

Circumference of base =$2 \pi r$

We are given that The circumference of the base of a 12 m = 1200 cm

So,$2 \pi r=66$

$2 \times \frac{22}{7} \times r=12$

$r=\frac{21}{2}$

Volume of air in cone =$\frac{1}{3} \pi r^2 h=\frac{1}{3} \times \frac{22}{7} \times (\frac{21}{2})^2 (1200)=138600 cm^3$

Hence The volume of air is 138600 cubic cm