self help group wants to manufacture jokers cap of 3 cm radius and 4 cm height .if available paper sheet 1000 CM square then how many caps can be manufactured from the paper sheet
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⇒ We have given, Height(h)=4cm and
radius(r)=3cm
.⇒ Let slant height be l.
We know that,
l
2
=h
2
+r
2
l
2
=(4)
2
+(3)
2
l
2
=16+9
l
2
=25
∴ l=5cm
⇒ Curve surface area of 1 joker cap =πrl
=
7
22
×3×5
=47.14cm
2
⇒ Available color paper sheet =1000cm
2
⇒ Number of caps manufacture from 1000cm
2
paper sheet =
47.14
1000
=21.21
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