Question

2.50 = pi r2. I really need help on this problem.

Answer 1

Answer:

r = 0.8923

Step-by-step explanation:

pi = 3.14

2.50 = 3.14 * r^2                      Divide by 3.14

2.50/3.14 = 3.14*r^2 / 3.14

.7962 = r^2                               Switch

r^2 = 0.7962                             Take the square root of both sides.

sqrt(r^2) = sqrt(0.7962)            

r = 0.8923                                 Answer  

I don't know where you are getting stuck. Maybe it's finding the square root. You can do that on almost any calculate by

• clearing the calculator and then
• pressing the √ and put in 0.7962
• =  

Perhaps it is the value of pi. The usual approximation is 3.14. Take that as your value.