Answer: 72
Step-by-step explanation:
Answer:
72
Circumference of a circle = 2πr
Area of a circle: πr^2
Plug in:
C = 2πr
30.1 = 2(3.14)r
30.1 = 6.28r
r = 4.79 (Dividing both sides by 6.28)
Use area of the circle:
A = 3.14(4.79)^2
= 72.044474
Round to nearest whole number = 72
B. 7
c. 5
678 rounds to 700 and 218 rounds to 200. 700-200=500
at first put the value of X
after that do the equation.
hope it will help you
