if the base of rectangle is increased by 30 % and altitude is decreased by 20% then area is increased by??
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The base is increased by 30% or the new base is 1.30*b, and the altitude is decreased by 20% or the new altitude is 0.80*a
New area, An is given by
(2) An = (1.3*b)*(0.8*a) or
(3) An = 1.04*b*a or
(4) An = (1 + .04)*b*h or
(5) An = b*a + 0.04*b*a or
(6) An = A + 4% of A
Answer: The area is increased by 4%
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Step-by-step explanation:
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