Answer:
60π
Step-by-step explanation:
2π(3 × 7 ) + 2π (3)^2
Distribute: 2x3x7 and 2x3^2
42π + 18π
That gives 60π.
√3 x √5 = √15
7√15 - 2√15 = answer 5√15
simple
6² = 36
7² = 49
8² = 64
√64
Answer:
The center of circle is
Step-by-step explanation:
We need to find the center of the circle of the equation 
Since, the general equation of circle is 
Where (h,k) is center of circle and r is radius.
Re-write the circle equation is
as,

Compare
with 
so, 
Hence, the center of circle is 
B
Because 2 sqrt5 is = to sqrt 20.
4^2=16, 6^2=36