Answer:
first off, take pic right side up next time. secondly, it's the forth one down
Step-by-step explanation:
X equal what umber,and y equal what number?
Area of a circle is πr^2.
The radius of the smaller circle with diameter 10 cm is 5 cm.
The radius of the larger circle with diameter 20 cm.is 10 cm.
Area of larger circle : Area of smaller circle
Area of larger circle = 100π.
Area of smaller circle = 25π.
Ratio = 100π : 25π or 100π/25π.
Answer:
10 miles per hour
Step-by-step explanation:
speed= distance/time
30/3
=10
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