Sure! I'd be happy to explain the steps to solve these problems.
Problem 1: Solve for the variable r in the equation C = 2Ï€r
Step 1: Start by isolating the variable you want to solve for. In this case, we want to isolate r.
Step 2: Divide both sides of the equation by 2Ï€ to cancel out the coefficient of r. This gives us: C / (2Ï€) = r
So, the solution is r = C / (2Ï€).
Problem 2: Solve for the variable l in the equation S = B + (1/2)Pl
Step 1: Again, start by isolating the variable you want to solve for. In this case, we want to isolate l.
Step 2: Subtract B from both sides of the equation to isolate the term involving l. This gives us: S - B = (1/2)Pl
Step 3: Multiply both sides of the equation by 2/P. This cancels out the coefficient of l, giving us: 2(S - B) / P = l
So, the solution is l = 2(S - B) / P.
I hope this breakdown of the steps helps you understand how to solve these types of problems! Best of luck with your test!