Answer:
192.42m²
Step-by-step explanation:
The larger circle: pi(10.5²)≈346.36
The smaller circle: pi(7²)≈153.94
Then subtract
.......................
12 units
The radius is half of the diameter, so we need to double 6 to get 12.
25 miles
18 ÷ 72% =
18 ÷ (72 ÷ 100) =
(100 × 18) ÷ 72 =
1,800 ÷ 72 =
25
