Question

please help me ....give me step by step explanation buddies please... ​

Answer 1

Answer:

This might help you my friend

Answer 2

$\huge\sf\pink{Answer}$

☞ Length = 20 km

☞ Breadth = 10 km

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$\huge\sf\blue{Given}$

✭ Breadth of a rectangle is equal to $\sf\dfrac{1}{2}$ of its length

✭ Perimeter = 60 km

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$\huge\sf\gray{To \:Find}$

◈ The Length & Breadth of the rectangle?

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$\huge\sf\purple{Steps}$

$\large\underline{\underline{\sf Let}}$

➝ Length = x

➝ Breadth = $\sf\dfrac{1}{2}$x

☯ $\underline{\sf As \ Per \ the \ Question}$

≫ Perimeter = 60 km

Perimeter of a rectangle is given by,

$\underline{\boxed{\sf Perimeter = 2(l+b)}}$

Substituting the given values,

➳ $\sf 2(x+\dfrac{1}{2}x) = 60$

➳ $\sf x+\dfrac{1}{2}x = \dfrac{60}{2}$

➳ $\sf x+\dfrac{x}{2} = 30$

➳ $\sf \dfrac{x \times 2 + x}{2} = 30$

➳ $\sf \dfrac{3x}{2} = 30$

➳ $\sf 3x = 30\times 2$

➳ $\sf x = \dfrac{60}{3}$

➳ $\sf \orange{x = 20}$

$\sf \dag \; Length = 20 \ km$

$\sf \dag \; Breadth = \dfrac{20}{2} = 10 \ km$

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