# Math

Calculate the total surface of a solid cone or vertical height 24cm and base diameter 14cm use,the value 22/7 for pier

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1. Diameter=2r

r=7

L²=r²+h²

L²=7²+24²=625

L=√(625)=25

You know l=25 ,r=7 and h=24

Plug into the formula above and you done

recall that TSA==πrl+πr²=πr(l+r)

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2. total I assume includes the base
so
pi r^2 + pi r L = pi r (r+L)
where L is the slant height =sqrt(r^2+h^2)
here r = 7 cm and h = 24 cm
L= sqrt( 49 + 576) = sqrt (625) = 25 that is handy :)
so
pi r (r+L) = pi (7)(7+25)

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3. i have to make up a story using \$100 bills, nine \$10 bills,
and twenty \$1 bills. but in division. what story can i make up?

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