If a circle has a circumference of 10piπ cm, what is its area?

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.