Answer:
D
Step-by-step explanation:
10÷2=5
So you would divide your answer by 2
7×5 is 35 also btw
7×10 is 70
$77
the radius found on the letter c
4
20: 1, 2, 4, 5, 10, 20
8: 1, 2, 4, 8
Greatest common factor is 4!