Answer:
Step-by-step explanation:
Use “D = R x 2”, in which "D" equals diameter and "R" equals radius, to solve for the diameter using the numbers you got earlier. Then use “C = pi x D”, in which "C" equals circumference, to solve for the circumference.
Answer:
rational
Step-by-step explanation:
Answer:
Step-by-step explanation:
sum of ratio=2+9+4=15
1st angle=2/15×180=24°
2nd angle=9/15×180=108°
3rd angle=4/15×180=48°
21 is a composite number. 21 = 1 × 21 or 3 × 7. factors of 21: 1, 3, 7, and 21.