Question

The radius of a cross-section of a tube of a truck is
28 cm. The outer radius of the tube itself is 63 cm.
What is the surface area of the tube?​

Answer 1

Answer:

If it is a circular pipe, as in a long tube, then the simple formula for the area of a circle, A=πr2 (Area equals pi times the radius of the circle squared, or Measure the diameter across the pipe, divide it in half, then multiply it ...