r2+6r-7 = (r+7)(r-1) when factored
The answer will depend on what r is.
r(r + 5)
R2 - 16 = 0 R2 = 16 Take the square root of each side to get rid of the square on R. R = 4
r2
r2+r2 = 2r2
The area of a circle is pi * r2 where r is the radius Solving for r, where A is the area: A = pi * r2 A/pi = r2 r = sqrt(A/pi)
r2 - 24r - 145 = (r - 29) times (r + 5)
R = r1*r2/r1+r2
r2+6r-7 = (r+7)(r-1) when factored
If: r2 = 17 Then: r = the square root of 17
Area = pi x r2, where pi is 3.14159 and r is the radius 38 = 3.14159 x r2 38/3.14159 = r2 √(38/3.14159) = r 3.48 = r
The answer will depend on what r is.
r(r + 5)
U l r d2 l2 d l2 u5 l2 u2 r u r2 d2 u3 r2 d2 l r u2 l2 d2 u2 r4 d2 l3 r u2 l2 d l2 d l d2 r2 d5 r2 u l d l u4 d3 r4 u2 l u l2 r d2 u r2 d2 l3 d l u2 d r2 u3 r u3 r2 u2 l2 d5 l d3 r2 u2 l r d2 l2 u2 r u l
The quadratic expression: r2+10r+25 = (r+5)(r+5) when factorised
Area = pi*[R2 - r2] where R is the outer radius and r the inner radius.