Answer:
The area of the biggest circle is 254.47
Step-by-step explanation:
9 times 3.14 = 254.47
Diameter of large = 12+6 = 18cm
A = πr^2
A= 254.47 cm^2
Answer:d
94.2 cm
62.8 inch
The circumference of a circle is 2πr, where r is the radius.
The diamater is twice the radius, d=2r.
1) 2π·15 ≈ 94.2 cm
2) r = 10 inch. 2π·10 = 62.8 inch.
