<span>Circumference of a circle = 2 π r
(where r is the radius)
Area of a circle = π r^2
(where r is the radius)
you have to find the radius
C = 2π unit
r = 1 unit
Area = π square units
</span>
Answer:
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Answer:
6
Step-by-step explanation:
6
Answer:
Step-by-step explanation:
we know that
The area of a circle is equal to
The radius of the new circle is equal to
---> the radius is half the diameter
substitute
First, convert the distance of a typical marathon to kilometers.
1 mi = 1.609 km
26.2 miles = 42.165 km
Divide this distance by Allan's average speed to get his average time.
42.165 km / 12 km/hr = 3.514 hours