Answer:
The 100,000,000
Step-by-step explanation:
The answer is 5.477225575.... or 5.5 if you want the simplified ansewer
Multiply both sides by 3 to get:
3r = sqrt(A)
Square both sides:
9r^2 = A
20% is equal to 0.2
0.2 times 26.40 is equal to 5.28
26.40 minus 5.28 is equal to 21.12
