The rectangle below has a length of 4x+3 and a width of 3x.
1 answer:
Step-by-step explanation:
a) perimeter is 2(4x+3+3x)= 2(7x+3) = 14x+6
b) the area is (4x+3)3x= 12x²+9x
c) as the perimeter is 14x+6 and x=8, it will equal 14*8+6= 112+6=118
as the area is 12x²+9x it will equal 12*8*8+9*8=768+72=840
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