Question

ASAP PLEASE ANSWER THIS WILL GIVE BRAINLIEST

Answer 1

Answer:

Therefore,

The Dimensions are,

$Length = 34\ cm\\\\Width = 9\ cm$

Step-by-step explanation:

Given:

Perimeter of a rectangle,

Perimeter = 86 cm

let "x" be the width of rectangle,

Width = x

then according to the given condition,

length will be given as,

$Length = 3x+7$

To Find:

Length =?

Width =?

Solution:

Perimeter of rectangle is given by,

$\textrm{Perimeter of Rectangle}=2(Length+Width)$

Substituting the values we get

$86=2(3x+7+x)\\\\86=2(4x+7).........Equation\\\\86=8x+14\\\\8x=86-14=72\\\\x=\dfrac{72}{8}=9\ cm$

Substituting "x" in Length we get

$Length = 3\times 9 +7=34$

Also Area Of Rectangle is given by

$\textrm{Areaof Rectangle}=(Length\times Width)=34\times 9=306\ cm^{2}$

Therefore,

The Dimensions are,

$Length = 34\ cm\\\\Width = 9\ cm$