Question

Find the total surface area
thickness 2 cm. The extern
2 cm. The external diameter of the pipe is
21 cm and its length is 3 m.​

Answer 1

Answer:

6

2 centimetre thickness external thickness to CM external diameter 21 CM length is equal to 3 cm does 6

Answer 2

Step-by-step explanation:

Find CSA of external and internal Surfaces then find the surface area of both circular rings and then add .