Question

question .the inner and outer wall of a 25-cm-long pipe that have diameter 14cm and 16cm respectively .find the volume of material can be used?

Answer 1

Answer:

1500π

Step-by-step explanation:

Height = 25 cm

R of bigger pipe = 16 cm

r of smaller pipe = 14 cm

Volume of pipe

= volume of bigger pipe - volume of smaller pipe

= πh( (R - r) (R + r) )

= 25π ( (16 - 14)(16 + 14) )

= 25π ( 2 × 30 )

= 25π ×60

= 1500π