Question

The perimeter of a rectangle is 3o m.its length is 10 m.find it's breadth

Answer 1

Answer is 5

as the formula to get perimeter of rectangle is 2×l+b

length is 10, so it will be doubled so the proper length is 20 m, now to get breadth 30-20=10 so the breadth is 10 but to get the breadth of both sides we will make 10 divided in 2 equal parts so it will be 5 so the breadth of this rectangle is 5. Let's verify it by putting the right values.

Verification

2× 5+10

2×15

30m

Answer 2

$\huge{ \text{Given}}$

• Perimeter of a rectangle = 30m.
• Length of a rectangle = 10m.
• Breadth = ?

$\huge{ \underline{ \text{ \underline{Solution}}}}$

We know that,

$\sf{ \boxed{ \blue{Perimeter \: of \: a \: rectangle =2 \times ( Length + Breadth) \: units}}}$

Now,

$\sf{ \large{30m= 2 \times (10m + breadth)}}$

$\sf{ \large{ = >2 \times (10m + breadth) = 30m}}$

$\sf{ \large{ = > 10m + breadth = \frac{30}{2} m}}$

$\sf{ \large{ = > breadth = 15m - 10m}}$

$\sf{ \large{ \orange{ \therefore{breadth = 5m}}}}$

Hence, Breadth of the rectangle = 5m

$\sf{ \underline{ \underline{ \large{ \purple{More \:Important \: Formuluas:-}}}}}$

$\sf{ \bold{Area \: of \: a \: rectangle}} = (length \times breadth) \: square \: units$

$\sf{ \bold{Perimeter \: of \: a \: square}} = 4a \: \: (a = length \: of \: a \: side)$

$\sf{ \bold{Area \: of \: a \: square }}= {a}^{2}$

Hope this helps!!!