The radius of a circular embankment is 30 meters. A drainage system is placed along a circle with a radius that is 10 meters smaller than the embankment. What is the radius of the drainage circle?
Show answer & explanation
Correct answer: A
Explanation
Given:
Radius of the embankment = 30 meters
The radius of the drainage circle is 10 meters less than that of the embankment.
According to the formula:
New radius = Larger radius − Difference
Radius of the drainage circle = 30 − 10 = 20 meters