How much does 1 triangle represent

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Which graph of a hyperbola represents the equation 16x^2-y^2=16

Deena is planting two rectangular gardens. one garden is 3.67 feet by 8.56 feet, and the other garden is 3.67 feet by 7.45 feet. which expression does not respresent the total area in square feet of the two gardens