Area of Circle = πr^2
Since we know that r=6.3:
π(6.3)^2=39.69 π=124.690
So, the area would be 124.690.
Point slope form is
y-y1=m(x-x1)
where slope=m
and (x1,y1) is a given point
slope=(y2-y1)/(x2-x1)
slope=(6-7)/(-8-(-5))=-1/(-8+5)=-1/-3=1/3
pick any point
(x,y)
(-5,7)
y-7=1/3(x+5) or
y-6=1/3(x+8)
The equation would be a simple as 20*30 a simple multiplication. <span />