Answer:
65
Step-by-step explanation:
40+p; p=25
Simple: subsitute p as 25
40+25=65
radius 12 units = 452.16 units²
diameter 16.8 units = 221.5584 units²
radius 3.4 units = 36.2984 units²
diameter 10 units = 78.5 units²
Formula for area of circle:
Answer: 41