Step-by-step explanation:
okay so we know that the width is x
and the length is x + 12
so our equation is
2x + 2(x+12)=100
so if we simplify and combine like terms we get
4x+24=100
subtract 24 from both sides
4x = 76
divide by four
x = 19
so now we are going to plug that back in the equation
19 = width
31 = length
we multiply those by each other to get the are which is
589 cm is the area
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