1. add 40 to the 40 and 25
2. now you have

3. then you have

4. then square root

5.then round answer to nearest tenth which is
Answer:
63.2
Step-by-step explanation:
90+26.6=116.8
180-116.8=63.2
She should use a computer to select 30 students at random then ask which ones play chess. The other options could produce more skewed results.
Equation for circumference is c = 2(pi)r
r = 1/2(d)
d = 20
So…. r = 1/2(20) = 20/2 = 10
Going back to circumference equation
c = 2(pi)(10) = 2(3.14)(10) = 62.8