Solve for the specified variable:18.A = πr2for r.19.P = 𝑣2𝑅for v

Question

Solve for the specified variable:18.A = πr2for r 19.P = 𝑣2𝑅for v

Answer 1

Area = pi(r^2) = pi times the radius squared

solve for r

r^2 = A/pi

r =square root of A/pi

r = sqr(A/pi) = sqrA/sqr(pi) = sqrA/sqr(3.14159) = about (sqrA)/1.77

r=(1/1.77)sqrA

P=v2R, solve for R, divide both sides by v2

R = P/2v