The top and bottom margins of a poster are each 15 cm and the side margins are each 10 cm. If the area of printed material on th
e poster is fixed at 2400 cm2, find the dimensions of the poster with the smallest area.--------- cm (width)--------- cm (height)
1 answer:
Answer:
Step-by-step explanation:
let the sides be x and y
x y=2400
so A is minimum when x=60
y=40 cm
so dimensions are 60+30=90 cm
and 40+20=60 cm
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