Question

The volume of a metallic cylindrical pipe is 784 cm3 its lenght is 14 cm and its internal radius is 8cm find its thickness

Answer 1

Answer:

Step-by-step explanation:

1)dimensions of a pipe

Height =h=14cm

Radius = r.cm

Given

Volume =748 cm^3

Pi*r^2*h=748

22/7*r^2*h=748

r^2 =(748*7)/(22*14)

r^2=17

r = root 17

r = 4(approximately)

Given external radius R= 9cm

Thickness of the pipe =9-4 =5cm