Answer:
9cm
Step-by-step explanation:
Given diameter (D) = 18
Radius = Diameter divide by 2
18\2
9
Diameter is 18cm, as you're given the measure from one side of the semi-circle to the other. Radius is half of that, and therefore is 9cm.
it could be 1000 the answer
(30+6)+(40+7)=86
add all those steps and see what you get
8a:15b:6c
a:b:c = 8:15:6
