The height of a triangle is 2cm less than twice its base. the area is 112 cm^2. find the heigh and base
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A triangle is changing. Initially the base of the triangle is 40 cm and this is increasing at a rate of 2 cm/hr. Initially the height is 30 cm and this is decreasing at a rate of 3 cm/hr.
a) What is area of the triangle? (cm^2)
b) Is the area increasing or decreasing?
c) How quickly is the area changing? (cm^2/hr)