Consider re-writing this formula as "A = pi*r^2." The backslash symbol "\" is unnecessary.
If A = pi*r^2, and we wish to solve for r, then divide both sides by pi:
A/pi = r^2
Taking the square root of both sides, sqrt(A/pi) = r (r must be positive in this situation).
Answer:
a. 120/w = l
120/l = w
b. l times w = 120
Step-by-step explanation:
He practiced for 1 hour and 30 minutes
