Answer:
58
Step-by-step explanation:
case I added it and I m right
Answer:

Step-by-step explanation:
The formula to find the area of a circle is

Let pi be (3.14), the radios as given in the question is (0.9). Therefore;

Answer:
(2.8 x 10^8) / (7 × 10^2) = 400'000
Step-by-step explanation:
It is a 125% increase from 20 to 45