A metallic right circular cone of radius 7 cm and height 9 cm is melted and recast into a cuboid whose two sides are 11 cm and 6 cm. The third side of the cuboid is:
OPTIONS :-
________
A) 6 cm
B) 22 cm
C) 7 cm
D) 14 cm
E) None of these
Answers
Answered by
7
Step-by-step explanation:
given, radius of cone =7 cm.
height of cone =9cm.
Then volume of cone=1/3*22/7*7*7*9
=462 cm^3
here,
vomule of cone = volume of cuboid
given, two sides of cuboid i,e; 11 cm. and 6 cm.
let the third side is x cm.
Now volume of cuboid
=11cm.*6cm.*xcm.
=66*x cm^3
Then, 66*xcm^3=462cm^3
=>x=462/66=7 cm.
Answered by
1
Answer:
r=7cm
h=9 cm
volume of cone=volume of cuboid
1/3 pie r^2= LBH
1/3×22/7×7×7 = 11×6×H
22×7/3= 66×H
22×7/3×66=H
H=7/9cm
e is the option
Step-by-step explanation:
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