Question

A cylindrical wooden piece is 19.4cm long. Find the surface area of the wooden piece if its diameter is 14cm.
help me i need it urgently in online exam​

Answer 1

Step-by-step explanation:

d=14cm

r=14/2=7cm

a cylindrical wooden piece =19.4cm

SA of cylindrical wooden piece= 2πr(r+h)

= 2×22/7×7(7+h) =19.4

44×7+h =19.4

308+h=19.4

h=308/19.4