Maria can weed the garden in 1.5 hours. If Janette helps her, they can finish the job in 30 minutes. How long does it take Janet
1 answer:
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we know that
The formula of the surface area of the cone is equal to
where
SA is the surface area
r is the radius of the cone
l is the slant height
in this problem we have
Solve the formula for l
substitute the values
therefore
<u>the answer is</u>
The slant height is
Answer:
<em>= 279</em>
Step-by-step explanation:
=
+ (n - 1)d
d = -
~~~~~~~~~
d = - 17 + 25 = - 9 + 17 = - 1 + 9 = 8
= - 25 + 8(39 - 1) = 279
<em>= 279</em><em> </em>