Question

The length and breadth of a rectangle are in the ratio 3:1 .if the breadth is 7 cm, then the length of the rectangle is?

Answer 1

Answer:

If breadth is x,

then length is 3x.

Breadth = x = 7

length = 3x = 21

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Answer 2

$\large\bf\underline {To \: find:-}$

• we need to find the length of rectangle.

$\huge\bf\underline{Solution:-}$

$\bf\underline{\red{Given:-}}$

• Ratio of length and breadth of rectangle is 3:1
• Breadth of rectangle = 7cm

Let the length and breadth of rectangle be 3x and x = 7cm

⇝ length of rectangle = 3x

⇝ 3 × 7

⇝ 21cm

So,

Length of rectangle is 21 cm

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⠀⠀༒Some formulas :-

⪼ Area of rectangle = l × b

⪼ Perimeter of rectangle = 2(l + b)

⪼ Length of rectangle = Area/Breadth

⪼ Breadth of rectangle = Area/length

⪼ Diagonal of rectangle = √l² + b²

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