Respuesta :
Answer:
A = 100 pi cm^2
Step-by-step explanation:
A = pi(r^2)
A = pi(10^2)
A = pi(100)
A = 314.16 '
Convert to pi units.
314.16 ---> 100pi cm^2
Answer:
Half of 20 is 10(New radius)
10^2(radius squared) = 100
100pi is your next step, which is 100π cm2
Formula area of a circle:
πr^2
pi(3.14 or 22/7 depending on what they tell you to use for pi) x radius(half of your diameter or given radius) squared(to the power of 2)
Pi x radius being squared
