Question

the thickness of a metric pipe is 1 cm. it's inner diameter is 12cm.what is the volume of metal needed for a pipe of length 1 m??
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Answer 1

Answer:

Step-by-step explanation:

Volume of metal needed = (volume of full pipe) - (volume of inner cylinder)

Diameter of pipe = 12 + 2 = 14 cm

=> radius of pipe = R = 7 cm

Radius of inner cylinder = r = 12/2 = 6 cm

Length of pipe = 100cm

=> volume of metal = pi * R^2 * h - pi * r^2 * h

= pi * h (R^2 - r^2)

= (22/7) * 100 * (7^2 - 6^2)

= 4085.71 cm^3

Answer 2

QUESTION

The thickness of a metallic pipe is 1 cm. it's inner diameter is 12cm. What is the volume of metal needed for a pipe of length 1 m?

SOLUTION

GIVEN

• Thickness of pipe = 1cm
• Inner diameter = 12cm

TO FIND

• The volume of metal needed for a pipe of length 1m.

NOW

Volume of metal needed = (volume of full pipe) - (volume of inner cylinder)

Diameter of pipe = 12 + 2 = 14 cm

=> radius of pipe = R = 7 cm

Radius of inner cylinder = r = 12/2 = 6 cm

Length of pipe = 100cm

ACCORDING TO QUESTION

$=> volume\: of\ metal = (pi × R^2 × h) - (pi × r^2 × h)$

$= pi * h (R^2 - r^2)$

$= (22/7) * 100 * (7^2 - 6^2)$

$= 4085.71 cm^3$

THEREFORE

Volume of metal needed = 4085.71cm³.

HOPE THIS ANSWER WILL HELP YOU!!