Answer:
A yes B no
Step-by-step explanation:
If the diameter is 9 cm the radius is 4.5 cm (half the diameter). The area of a circle is given by the formula: 4πr^2, where π is the constant ratio of circumference to diameter (3.14159...).
3.14 cm x 4.5 cm = 14.13 cm^2. Remember, the units must be squared to represent area. 14.13 is extended to the nearest hundredth.
C. 42.39 times 0.1 is 4.239. 42.39-4.239= 38.151 which rounds to 38.15
