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Answer:
The value of rate of which the base is changing = - 3
Step-by-step explanation:
Area = 20
height = 4 cm
we know that area of the triangle is given by
B = 10 cm
Rate of change of area is given by
4 = 0.5 [10 × 2 + 4 ]
= - 3
This is the value of rate of which the base is changing.