Answer:
25.12
Step-by-step explanation:
Formula: 2πr, r = d/2
Given: π = 3.14, d = 8
Sub: r = 8/2
Simplify: r = 4
Sub: 2(3.14)(4)
Simplify: 6.28(4)
Solve: 25.12
Step-by-step explanation:w=1cm
Answer: (x - 3) (2x-1)
2.b
3.a
4.c
hope it helps you