Sergio is S years old. Which expression shows how old will he be 7 years from now?
2 answers:
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The area of a circle:
r - the radius, which is equal to half the diameter d
The first circle:
The second circle:
the second circle has a diameter that is four times the diameter of the first circle.
The ratio of the area of the smaller cirlce to the area of the larger circle:
The ratio is 1:16.
r - the radius, which is equal to half the diameter d
The first circle:
The second circle:
the second circle has a diameter that is four times the diameter of the first circle.
The ratio of the area of the smaller cirlce to the area of the larger circle:
The ratio is 1:16.