Question

The thickness of metallic pipe is 1 cm the inner diameter is 12 cm what is the volume of metal needed for a pipe of length 1 m

Answer 1

Question:

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

Solution:

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

Volume of metal = π×R²×h-π×r²×h

π×h (R² - r²)

(22/7) × 100 × (7² - 6²)

Therefore

4085.71 cm³ is the volume of metal needed for a pipe of length 1 m.

Answer 2

SOLUTION:

diameter of pipe = 12+2 = 14cm

Radius of pipe = R = 7cm

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

Length of pipe = 100cm

VOLUME :

Volume of metal = π + R²x h - π x r²x h

π x h (R²- r²)

(22/7)x100x(7²-6²)

THEREFORE :

4085.71cm² is the volume of metal needed for a pine of length 1m