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Paladinen [302]
3 years ago
9

The diameter of circle S is 30 units, the diameter of circle R is 20

Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

4 Units

Step-by-step explanation:

A diameter is a line that passes through the center of  a circle thus dividing it into two semicircles. A radius is half of a diameter, a line drawn from any part of the circumference of the circle to the center of the circle.

Given that  the diameter of circle S is 30 units, the radius of the circle CS

= 30/2 units

= 15 unit

If DS = 9 units and from the circle, we know that

DC + DS = CS

DC = 15 - 9

= 6 Units

If the diameter of circle R is 20 units then the radius DR

= 20/2 units

= 10 units

but CR + DC = DR

Hence CR = 10 units - 6 units

= 4 Units

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