Question

100 cylindrical pen holders with message '' dont use plastic bag'' each of radius : 3.5 cm and height: 10 cm. find total amount of cardsheet and volume.what value it gives?

Answer 1

The value given by the message convey to it is very simple and price less that plastic harm nature and hard to destroy. So we should reduce the over use of plastic for simple purpose that could be done with other efforts like bags made with cloths, jute etc. And For solution of the question plz watch out the pic.

Answer 2

No. of cylindrical pen holders : 100
Radius : 3.5 cm
Height : 10 cm
(1) Total amount of card sheet for 1 : 2πr(r+h)
: 2*22/7*3.5(3.5+10)
= 297 cm^2
For 100= 297*100= 29700cm^2 is required !!!
(2) Volume of 1 : π r^2h
22/7*3.5*3.5*10
385 cm^3
Volume Of 100= 385*100= 38500 cm^3
Values ::: Plastic has harmful effects on our Environment!!! We must not use plastic bags !!!