Question

HOW TO FIND BREADTH AND AREA​

Answer 1

Answer:

Breadth=  7 cm   Area= 84 $cm^{2}$

Step-by-step explanation:

Given: Length l=12 cm, Perimeter= 38 cm

Now, Perimeter=2(l+b) ...(1)

To find: Breadth b and Area A

Using (1),

38=2(12+b)

$\frac{38}{2}$=12+b

19=12+b

b=7 cm

A=l×b

A=12×7

A=84 $cm^{2}$

Answer 2

Answer:

The breadth and the area of the rectangle will be 7 cm and 84 cm² respectively

Step-by-step explanation:

Here the perimeter and length of a rectangle is given to be 38 cm and 12 cm respectively

We will first find the breadth of the rectangle

perimeter= 2 ( length + breadth )

           38 = 2 ( 12 + breadth )

           19 = 12 + breadth

  breadth = 19 - 12

 breadth = 7 cm

Now, we will find the area of the rectangle

area = length × breadth

       = 12 × 7

       = 84 cm²