## lateral area of a cone is 32pie in squared.if the radius is

Geometric formulae, word problems, theorems and proofs, etc.
king&i
Posts: 23
Joined: Sat Mar 07, 2009 5:13 pm

### lateral area of a cone is 32pie in squared.if the radius is

hte lateral area of a cone is 32pie in squared.if the radius is 12in find the slant heigth.

stapel_eliz
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hte lateral area of a cone is 32pie in squared.if the radius is 12in find the slant heigth.
The formula for the lateral area (that is, the surface area of the sides, but not of the bottom) A of a cone with radius r and slant-height s is given by:

. . . . .$A\, =\, \pi rs$

So plug $32\pi$ in for A and 12 in for r. Solve for the value of s.

king&i
Posts: 23
Joined: Sat Mar 07, 2009 5:13 pm

### Re: lateral area of a cone is 32pie in squared.if the radius is

32pie=pie12s
2.66=s
??

stapel_eliz
Posts: 1628
Joined: Mon Dec 08, 2008 4:22 pm
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I'm not sure what your question is...? But I'm pretty sure a truncated-decimal answer won't be counted as completely correct. Use the fractional form, instead:

. . . . .$s\, =\, \frac{32\pi}{12\pi}\, =\, \frac{32}{12}\, =\, \frac{8}{3}$

king&i
Posts: 23
Joined: Sat Mar 07, 2009 5:13 pm

### Re: lateral area of a cone is 32pie in squared.if the radius is

i figured it out thx