Answer:
C
Step-by-step explanation:
.jst c . i thnk it is.............
x+2a-b=5x+5a-2*3a+2*b
x+2a-b=5x+5a-6a+2b
x+2a-b=5x-a+2b
5x-x=2a-b+a-2b
4x=3a-3b
4 x=3(a-b)
x=3/4(a-b)
(x-2)(x-3)
r=35ft, d=70ft. when r=15 mm, d=30mm
Radius is half of diameter