In the diagram, the radius of the outer circle is 5 centimeters and the area of the shaded region is 16π square centimeters. Fin
d the radius of the inner circle.
A.) r = 1
B.) r = 2
C.) r = 3
D.) r = 4
A.) r = 1
B.) r = 2
C.) r = 3
D.) r = 4
1 answer:
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The answer is 4.4102. We know the length of one side is 2.4 and the length of the other side is half of 7.4. If we use Pythagorean’s theorem to find the hypotenuse we get (7.4/2)^2 + 2.4^2 = X^2. By solving for x we get x= root( (7.4/2)^2 + 2.4^2). So x is approximately 4.41.
