You do 2x5=10 then x 6=12
The radius of B is 2.5cm.
<h3>What is a circle?</h3>
A circle is the locus of points equidistant from a common point which is called the center of the circle.
Analysis:
Area of circle A = π
/4 = π
/4 = 225π/4
Area of circle B = π
But A = 9B
225π/4 = 9 x π
= 225/36 = 25/4
r = 
= 5/2 = 2.5cm
Learn more about circle: brainly.com/question/24375372
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HU is the hypotenuse!
- IU is the opposite side of angle H
- and i'm pretty sure HI is the adjacent side to angle H!
-the hypotenuse is always the longest side and will be the opposite side of the right triangle. so angle i is the 90 degree angle, so the opposite side is HU which is also the longest!
- angle H is marked and you can see the opposite side of it is IU which is one of the legs of this triangle.
- adjacent just means like next to or beside so the side HI is next to the angle H which is also a leg of this triangle.
i hope this helps!!
The answer is 13 and a half
