Math, asked by abaan20, 4 months ago

A solid iron cuboid of dimensions 7 cm ,10 cm and 11 cm is melted to form a cylindrical pipe of height 20 cm .Find the radius of pipe.

Answers

Answered by HarahitaRaj101105
0

Answer:

radius of pipe=3.5

Step-by-step explanation:

Dimensions of cuboid=7cm, 10cm, 11cm

Volume of cuboid=7×10×11=770cm³

Volume of cuboid=Volume of cylinder

Vlolume of cylinder= 22/7× r² ×20

770=22/7× r²×20

r²=(770×7)/(22×20)

r²=49/4

r=7/2=3.5cm

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