If the height and base of the parallelogram shown are each decreased by 2 cm, what is the area of the new parallelogram?

A parallelogram with a base of 10 centimeters and a height of 8 centimeters.

help fas pleas :(

What is the smallest integer n such that n\sqrt{2} is greater than 20

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?