Question

the base radius of a cone is 30 cm and height is 10 cm what is the slant height would be the cost of painting 100 such ?
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Answer 1

Answer:

slant height =$\sqrt{r^{2}+h^{2} }$

=$\sqrt{30^{2}+10^{2} }$

=10$\sqrt{10}$

Step-by-step explanation:

you didn't provide cost of painting one cone

although if there is no base, surface area of cone is πr where r is radius, l=slant height= lateral surface area

if there is base, total surface area = πrl+π$r^{2}$ [total surface area]

there will be cost of painting given for a fixed area.

multiply it with the area of cone to know the price to paint one cone

then multiply this number with 100 for getting cost of painting 100 such cones.

you will get your answer. be careful with units. convert all units to one unit

all the very best