First of read all formulas
Step-by-step explanation:
Calculate 50 *7 and add 350 and 200
2461.76
Step-by-step explanation:
A=πr^2
First, find the area of the smaller circle.
A = (3.14)(21^2)
A = 1384.74
Next, find the area of the larger circle. Since it was stated that both circles have the same center, the radius would be 28.
A = (3.14)(28^2)
A = 2461.76
Now subtract the area of the smaller circle from the larger circle.
2461.76 - 1384.74 = 1077.02
Since 1077.02 is already rounded to the nearest hundredth, leave it as it is.