Answer:
100m race
Step-by-step explanation:
because 10.4 x 4 because 100m and 400m right 10.4x4=41.6 and 43.9 so obviously the 100m race is faster.
Answer:
The length of each side of the pentagon is 8.3 cm
Step-by-step explanation:
we know that
A regular pentagon has five equal sides
The perimeter of a regular pentagon is equal to
![P=5x](https://tex.z-dn.net/?f=P%3D5x)
where
x is the length side of each side
we have
![P=41.5\ cm](https://tex.z-dn.net/?f=P%3D41.5%5C%20cm)
substitute
![41.5=5x](https://tex.z-dn.net/?f=41.5%3D5x)
Solve for x
Divide by 5 both sides
![x=41.5/5](https://tex.z-dn.net/?f=x%3D41.5%2F5)
![x=8.3\ cm](https://tex.z-dn.net/?f=x%3D8.3%5C%20cm)
S=2×3.14×r×h+2×3.14×r²
so,h={s / (6.28r)} - r