Area of a circle is πr^2.
The radius of the smaller circle with diameter 10 cm is 5 cm.
The radius of the larger circle with diameter 20 cm.is 10 cm.
Area of larger circle : Area of smaller circle
Area of larger circle = 100π.
Area of smaller circle = 25π.
Ratio = 100π : 25π or 100π/25π.
Answer:
$31.25
Step-by-step explanation:
125 divided by 4 = 31.25
$31.25
Answer:
The first one
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
arc length = circumference × fraction of circle
= 84 ×
= 21 cm
three more than twice a number.