a company packs chocolate powder in cylindrical jars of radius 7 cm and height 20 cm. the label of the company is placed around the surface of jar with a 2 cm space from top and bottom. find area of label
Answers
Answered by
17
Firstly, find the Curved Surface Area of the Jar by the formula= 2πrh
r=7cm ,h=20cm ,π=22/7
CSA= 2×22/7×7×20 cm²
CSA= 44×20 cm²
CSA= 880 cm²
CSA of Jar = 880 cm²
NOW, Find the CSA of Label
Height not covered by label is 2+2=4 cm
subtracting height not covered from total height,we get
20-4= 16cm
CSA of label =2×22/7×7×16 cm²
CSA= 44×16 cm²
CSA= 704 cm²
area of label is 704 cm² :D
r=7cm ,h=20cm ,π=22/7
CSA= 2×22/7×7×20 cm²
CSA= 44×20 cm²
CSA= 880 cm²
CSA of Jar = 880 cm²
NOW, Find the CSA of Label
Height not covered by label is 2+2=4 cm
subtracting height not covered from total height,we get
20-4= 16cm
CSA of label =2×22/7×7×16 cm²
CSA= 44×16 cm²
CSA= 704 cm²
area of label is 704 cm² :D
Similar questions