Find the area of this parallelogram.
13 cm
15cm
20cm

Find the difference (8ab+a+2) - (3ab+6)

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x