Which geometric figure contains exactly two perpendicular lines a hexagon a square a rectangle or a right triangle

What is the equation of the graph below? y=sec(x)-4

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.