Question

its my math exam pls help me

with full explanation ​

Answer 1

Answer:

1.2826

Step-by-step explanation:

Are of circle is πr²

3.14×30×30= 2826

Answer 2

Answer:

2.12m^2-9m+5m-4m^2-7m+10

8m^2-11m+10

3.2*10^5+7*10^4+9*10^3+4*10^2+0*10^1+4*10^0

10^2(2*10^3+7*10^2+9*10+4)+4

100(2000+700+90+4)+5

100(2794)+4

279400+4

279404