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: 72.4
Step-by-step explanation:
Fraction of six-grade students that have at least one pet = 2/5
Number of sixth graders at Brunswick Elementary school = 181
The number of sixth graders that own own pets will be:
= 2/5 × 181
= 72.4
Force is equal to mass times acceleration.
So to find how much force is needed do 2,500 x 4, which equals 10,000.
Force is measure in Neutons so the answer will be:
10,000N of force is needed to accelerate a 2,500 car 4 m/s.