The Total solution for NCERT class 6-12
Given,
Radius of thecylindrical portion (R) = 20 m
Height of thecylindrical portion (h1) = 4.2 m
Height of the conicalportion (h2) = 2.1 m
Now, we know that
Volume of theCylindrical portion (V1) = ╧Аr2┬аh1
V1┬а=╧А(20)24.2
V1┬а=5280 m3
And, the volume of theconical part (V2) =┬а1/3 ├Ч 22/7 ├Ч r2┬а├Ч h2
V2┬а=┬а13├Ч 22/7 ├Ч 202┬а├Ч 2.1
V2┬а=880 m3
Thus, the total volumeof the tent (V) = volume of the conical portion + volume of the Cylindricalportion
V = V1┬а+V2
V = 6160 m3
Therefore, volume ofthe tent is 6160 m3┬а┬а