Answer:
73 y/o
Step-by-step explanation:
Multiples of 9 between 50 and 80:
54 63 72 now add 1
55 64 73 now divide by 4 to find which has remainder of 1
73 y/o
Answer:

Step-by-step explanation:
we know that
The area of the circle is equal to

where
D is the diameter of the circle
Solve for D
That means-----> Isolate the variable D
Multiply both sides by 4 to remove the fraction

Divide both sides by π

square root both sides

Rewrite

Simplify
