Question 423466
Solution: The pipe is in shape of cylinder, where the surface area is:

    {{{ S = 2*(pi)*R*H }}}, where R is the base radius and H is the length of pipe.
      {{{ S= 2*(3.14)*(0.25)*(100)}}}   (3 inches = 0.25 feet)

        S=157

Answer:The exposed surface area of the pipe is 157 square feet.