Question

An equation is given.

​A=4π r^2
​Solve the equation for r .

A) r=4πA/2
B) r=A/2π
C) r=√A/4π
D) r=√4π/A

Answer 1

Hello There. The correct answer to this is B. Because it shows that A = 4pr2 We need divide each term of 4pr2 = A r2 A-4p Then we need to do is Take the square root of both sides of the equation to eliminate the exponent on the left side. r = + A-4p Then completed of the solution is the result of both the positive and negative portions of the solution.

Hope It Helps! Good Luck.

ItsNobody