Question

solve it ....
....no smap​

Answer 1

SOLUTION

Given that, the radius (r) of cone is 3cm and height (h) is 4cm

& the available paper sheet is 1000cm^2

& surface area of cone = πrl

also slant height (l)= √r^2+ h^2

=) l= √3^2+4^2

=) l= √9+16

=) l= √25

=)l= 5

surface area of joker cap= 22/7× 3×5

=) 330/7 cm^2

Number of caps that can be manufactured from that paper sheet

=) 1000/330/7cm^2

=) 1000× 7/330 cm^2

=) 21.21cm^2

=) 21cm^2 [answer]

hope it helps☺️

Answer 2

$\huge\underline\mathfrak\red{Solution}$

$\bold\pink{Given}$

$\bold{Radius=3cm}$

$\bold{Height=4cm}$

$\bold{Available\:Paper\:Sheet=1000cm^2}$

So Now formula used will be $\bold{πrl}$

Now we need to find $\huge{l}$

$l = \sqrt{ {r}^{2} + {l}^{2} }$

$l = \sqrt{ {3}^{2} + {4}^{2} }$

$l = \sqrt{9 + 16}$

$l = \sqrt{25}$

$l = 5 \: cm$

Now ,

$\dfrac{22}{7} \times 3 \times 5 = \dfrac{330}{7}$

Now ,

$no \: of \: caps \: = \dfrac{total}{available}$

$no \: of \: caps = \dfrac{1000}{ \frac{330}{7} }$

$= \dfrac{1000 \times 7}{330}$

$= \dfrac{100 \times 7}{33}$

$= \dfrac{700}{33} = 21.21$

Since caps can't be taken in points or decimals so,

$\bold{\underline{Caps\:Required=22}}$