What is the length of BC? 2
3
1
5
6
4 cm
9
2 cm
A. V20 cm
B. 2 cm
C. V12 cm
D. 5 cm
B
C

99 points at a zoo, the leopard pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle with a radius of 12 m. the inner edge of the sidewalk is a circle with a radius of 8 m. (1 point for showing all of your work) a. write and simplify an expression for the exact area of the sidewalk. (1 point for the answer) b. find the approximate area of the sidewalk. use 3.14 to approximate π. (1 point for the answer)

Ineed i been stuck on this question since yesterday

Which expression and diagram represent “renee biked four times as far this month as last month”?