Determine the metal required to make a 21 m long pipe if its inner and outer diameter is 12 m and 10 m respectively ?
Determine the metal required to make a 21 m long pipe if its inner and outer diameter is 12 m and 10 m respectively ?
Table Of Content
A. 725 m3
B. 2534 m3
C. 2843 m3
D. 2647 m3
Answer : A. 725 m3
Explanation:
Find the volume with diameter = 12 m
Radius = Diameter ÷ 2
Radius = 12 ÷ 2 = 6 m
Volume = π * r2 * h
Volume = π * (6)2 * 21
V1 = 2,375 m3
Find the volume with diameter = 10 m
Radius = Diameter ÷ 2
Radius = 10 ÷ 2 = 5 m
Volume = π * r2 * h
Volume = π * (5)2 * 21
V2 = 1650 m3
Find the volume of the metal used:
Volume = V1 – V2
= 2,375 – 1650
Volume = 725 m3
