Question

A company pack chocolate powder in cylinder jar of radius 7cm and height 20 cm. The label of company is placed around the surface of jar with 2cm space from top and the bottom . Find
the area of the label

Is the answer:704

Answer 1

label is 2cm from the top and bottom,,,
therefore Height of Label =20-2-2=16cm

Now length of Label will be circumference of the Cylinder ,,,,
=2πR
=2x(22/7)x 7
= 44cm


Label Area = Length(circumference) X height
= 44x16
= 704cm^2