Answer:
since a diameter is twice if a radius
5.4 x 2
diameter= 10.8
circumference= 2x pi x r= 2 x 3.14 x 5.4
33.912cm
40cm( approximately)
1 One and 2 = 10.8
last one = 33.912cm
Explanation:
4.7m questions
6.1m answers