answer:
131.88 inches
step-by-step explanation:
- know the formula: 2πr
- now plug in what we have
2πr = circumference
2(21)(3.14)
= 131.88
Answer:15
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
they are vertical angles
Answer:
two times a number plus two is eight
Step-by-step explanation:
