Pi r^2 = area of a circle so therefore answer is 12.6cm^2
If the problem was written x + 4x. We would know to add like the coefficients together and get 5x same thing with the radicals.
Answer:
548
Step-by-step explanation:
1) Divide 137 by 0.25 (25%)
137/0.25 = 548.
To check, find 25% of 548.
(548 x 25)/100 = 137
It is B. simple random sample
Complementary is 90 so 90-65= the missing angle which is 25