Question

The perimeter of a rectangular sheet is 100 cm the length is 35 cm find its breadth and also find the area

Answer 1

Answer:

Step-by-step explanation:

perimeter=2l+2b

100=70+2b

b=15

therefore area = 15*35=525cm2

Answer 2

Answer :

Breath =15cm & area =525cm².

Step-by-step explanation:

$Given \: length \: of \: the \\ \: rectangular \: sheet = 35cm$

$Given \: perimeter \: of \: \\ the \: rectangular \: sheet = 100cm$

$let \: length \: be \: l .\\ and \: breadth \: be \: b.$

$As \: Area \: of \: rectangle \\ = (l \: \times b) {cm}^{2}$

$Perimeter \: of \: rectangle \\ = 2 \times (l + b)cm$

Now the equation becomes,

$100cm = 2 \times (35 + b) \\ \frac{100}{2}cm = (35 + b) \\ 50cm \: \: \: = (35 + b) \\ (50 - 35)cm = b \\ 15cm \: \: \: \: = \: \: b$

Now,

$area \: = (35 \times 15) {cm}^{2} \\ area = 525 {cm}^{2}$