Question

a company packages its milk power in cylindrical container whose base has a diameter of 14 cm and height 20cm company places a lablel around the surface of the container if the label is placed 2 cm from and bottom what is the area of the label

Answer 1

Diameter = 14 cm   Therefore, radius = 7 cm
height = 20 cm
As the label is placed 2 cm from the bottom, 
Height of the label = 20 - 2 = 18 cm
CSA = 2 × pi ×r × h
      
         =  2 × (22/7) × 7 × 18
       
         =  44 × 18
      
         = 792 sq cm

Area of the label = 792 sq cm

Answer 2

radius=7 cm
height=20 cm
label's height= 20-2=18
cs=2πrh
=2*22/7*7*18
=44*18=792 cm²
Area of the label=792 cm²