Question

The sides of a rectangle are x cm and 5 cm.Its perimeter is 24 cm.Find the value of x
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Answer 1

Answer:

2 ( X + 5 ) = 24

2x + 10 = 24

2x = 14

X = 7cm

Answer 2

Answer:

$\huge{\underline{\underline{Given→}}}$

• $\sf\green{Length\:of\:rectangle=x cm}$
• $\sf\green{Breadth\:of\:rectangle=5 cm}$
• $\sf\green{Perimeter\:of\:rectangle=24 cm}$

$\huge{\underline{\underline{To\:Find→}}}$

$\sf\purple{→Breadth\:of\:the\:rectangle.}$

$\huge{\underline{\underline{Answer→}}}$

$\mathrm{As\:perimeter=2(l+b)}$

$\sf\blue{→P=2(l+b)}$

$\sf\blue{→24=2(5+b)}$

$\sf\blue{→(5+x)=\dfrac{\cancel{24}}{\cancel{2}}}$

$\sf\blue{→5+x=12}$

$\sf\blue{→x=12-5}$

$\sf\blue{→x=7cm}$

$\sf{\boxed{\boxed{\pink{→b=7cm✔}}}}$

☞ Hence the breadth of the rectangle is 7cm which is the required answer.

HOPE IT HELPS.