Question

the volume of a metallic cylinderical pipe is 748cm3. it's length is 14cm and it's external radius is9 cm. Find it's thickness​

Answer 1

Answer:

5 cm

Step-by-step explanation:

Given: Height =h=14cm

Radius = r.cm

Volume =748 cm^3

To Find: thickness of cylindrical pipe

Solution: Volume of cylinder = pi*r^2*h

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

Hope it helped u...