The diameter of a circle is calculated by using the formula D=r2pi so plug in the known values to find r=2/pi. Next plug r into the area of a circle formula(A=r^2pi) do so and get 4/pi
Aruthmetic sequene is an=a1+(n-1)d where d=common difference between terms adds 6 every time d=6 first term is 8 a1=8 8+6(n-1) distribute 8+6n-6 8-6+6n 2+6n is answer
