Question

A self-help group wants to manufacture joker’s caps of 3 cm. radius and 4 cm height. If the available paper sheet is  then how many caps can be manufactured from that paper sheet?

Answer 1

Area of sheet =1000sqcm

Area of the cap( cone) =πrl

( l= √ r^2+h^2= √(9+16)=5)

πrl = 22/7 ×3× 5= 330/7 = 47.1sqcm
total number of caps= 1000/4.71= 212
so only 212 caps can be made using the sheet.

Answer 2

Answer:

21 caps

Step-by-step explanation:

the are L.S.A of cone:-$\pi$rl

=22/7.3.5

=22/7.15

=330/7

=47cm²

therefore, from 1000cm² paper sheet we can make 21 caps..