Simplify 90/105 with complete answer

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)

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

What is the measure of the smallest angle in the diagram? 15 29 32 45