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juin [17]
3 years ago
6

**PLEASE HELP MARKING BRAINLIEST**

Mathematics
2 answers:
Sophie [7]3 years ago
5 0

Answer:

width = 8 cm

length = 40 cm

Step-by-step explanation:

let's take the width of the rectangle be x

length = 4x + 8

now,

perimeter = 2 × ( length + width )

=》P = 2 × ( 4x + 8 + x )

=》P = 2 × ( 5x + 8 )

=》P = 10x + 16

now, we know perimeter = 96 sq.cm

so,

=》10x + 16 = 96

=》10x = 96 - 16

=》x = 80 ÷ 10

=》x = 8

since, width = x , so width = 8 cm

length = 4x + 8 = (4 × 8) + 8

= 32 + 8 = 40 cm

Tamiku [17]3 years ago
4 0

Answer:

its \: dimensions \: are \to \\\boxed{w = 17.6cm}  \: \boxed{l = 78.4cm}

Step-by-step explanation:

if \to l = 4w + 8 \\ but  \\ \: perimeter(p )= l + w = 96 \\ 4w + 8 + w = 96 \\ 5w + 8 = 96 \\ 5w = 96 - 8 \\ 5w = 88 \\ w =  \frac{88}{8}  \\  \boxed{w = 17.6cm} \boxed{l = 78.4cm}

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