Question

The perimeter of a rectangle is 210 cm. If the breadth is 30 cm, find its length.

Answer 1

Answer:

75

Step-by-step explanation:

210-30+30/2

210-60/2

150/2

75

Answer 2

$\Large{\underbrace{\underline{\bf{GIVEN\::}}}}$

• Perimeter of a rectangle is 210 cm.

• Breadth of the rectangle is 30 cm.

$\Large{\underbrace{\underline{\bf{TO\:FIND\::}}}}$

• Length of the rectangle.

$\Large{\underbrace{\underline{\bf{SOLUTION\::}}}}$

We know that,

✳ Perimeter of the rectangle is,

$\orange\bigstar\:\mid\mid\:{\underline{\underline{\overline{\overline{\pink{\bf{Perimeter\:=\: Length\times{Breadth}\:}}}}}}}\mid\mid\:\green\bigstar$

➟ 210 = Length × 30

➟ Length = $\rm{\dfrac{210}{30}}$

➟ Length = 7 cm

∴ Length of the rectangle is 7 cm.