8 1/5 + (4 2/5 + 3 3/10
2 answers:
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60 people have ridden the wheel in 30 minutes
The time is given as:
The number of seats on the wheel is given as:
The number of people on a seat is given as:
Every minute a seat exits the platform.
This means that, 2 people exit the platform every minute
So, the number (n) of people that exit the platform after 30 minutes would be:
This gives
Multiply
Hence, 60 people have ridden the wheel
Read more about proportions at:
Answer:
Heptagon = 84 ft²
Octagon = 186 yd²
Triangle = 48√3 m²
Step-by-step explanation:
where:
= length of apothem
= perimeter
<u>Heptagon</u>
a = 5.0 ft
p = 33.6 ft
⇒ area = 1/2 x 5.0 x 33.6 = 84 ft²
<u>Octagon</u>
a = 7.5 yd
p = 8 x 6.2 = 49.6 yd
⇒ area = 1/2 x 7.5 x 49.6 = 186 yd²
<u>Triangle</u>
Formula for the apothem of an equilateral triangle :
where
= side length
a = 4, so:
Now we know the side length, we can calculate the perimeter (p):
p = 3 x 8√3 = 24√3
⇒ area = 1/2 x 4 x 24√3 = 48√3 m²