Relax

Respuesta :

We know that the area of a circle is A=pi(radius-^2)
And the circumference formula is C=2(pi)(r)

6) what I did was plug in those diameters in the formula. So
C=2(3.14)(7.5)=41.1
B IS YOUR ANSWER (15)

7)20^2(3.14)=1256
B IS YOUR ANSWER (20)