Answer:
Approximately 7.16 in
Step-by-step explanation:
Hi there!
Area of a circle equation:
where r is the radius
Plug in the given area 161 in.²

Divide both sides by π to isolate r²

Take the square root of both sides to isolate r

Therefore, the radius of the circle is approximately 7.16 in.
I hope this helps!
It’s actually all except bottom left
Answer:
see below
Step-by-step explanation:
given:
radius of a circle = 3cm
find:
1. diameter
2. radius
3. r²
1) diameter = twice the radius = 2 r = 2 (3) = 6 cm
2) radius = 3 cm
3) r² = 3² = 9 cm
Answer/Step-by-step Explanation:
True. Expressions cm be expressed using the above listed