Question

a metal pipe 154 cm long has an outer radius of 5.5 cm and an inner radius of 4.5 cm what is the volume of metal used to make pipe? please give the solution immediately..

Answer 1

Outer+inner radius
put the volume formula of cylinder
22/7×10×10×154
22×22×100
48400cm3

Answer 2

Dear Student,

● Answer -

Metal used = 4840 cu.m

● Expaination -

# Given -

h = 154 cm

R = 5.5 cm

r = 4.5 cm

# Solution -

Inner volume of metal pipe is -

Inner volume = πr²h

Inner volume = 22/7 × 4.5² × 154

Inner volume = 9801 cu.cm

Outer volume of metal pipe is -

Outer volume = πR²h

Outer volume = 22/7 × 5.5² × 154

Outer volume = 14641 cu.cm

Volume of metal used for making pipe is -

Metal used = outer volume - inner volume

Metal used = 14641 - 9801

Metal used = 4840 cu.cm

Hence, metal used is 4840 cu.cm.

Hope this helps you...