(1) circumference of a circle = 2π.R
(2) area of a circle = π.R²
Area = 452.16 m² (given), so we can calculate the radius:
452.16 = π.R²
452.16/π = R²
143.92 = R²  → R =√143.92 ≈ 12 m
Having R = 12, now we can calculate the circumference :
circumference of a circle = 2π.R = 2.π.12 = 75.41 m
        
             
        
        
        
Answer:
1) $53.50
2)$85.10
3) $57.60
4)1.5
4) $2511.25
Step-by-step explanation:
for 1,2,3,5 take the original amount and the percentages to set up something like this
$50X1.07
which gives you the entire answer in a simple step
 
        
                    
             
        
        
        
Answer:
i dont see a # line..
Step-by-step explanation:
hmm hmm
 
        
             
        
        
        
A=h(b+c)
A/h=b+c
b=(A/h)-c
Answer: b=(A/h)-c