Question

The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth.

Also find the area.​

Answer 1

Answer:

breadth = 15 cm

area = 525 cm²

Step-by-step explanation:

The perimeter of a rectangle has the formula : 2 ( L + B )

Perimeter = 2 ( L + B )

   100 cm  = 2 ( 35 + B )

   100 cm  = 70 + 2B

    100 - 70 = 2B

         30     = 2B

         15      = B

breadth = 15 cm

The formula for a rectangle's area is ( L x B )

area of the rectangle = L x B

                                   = 35 x 15

                                   = 525 cm²

Hope this helped.

Answer 2

$\large{\mathcal{\underline{\red{Given,}}}}$

• $\bf{Perimeter\:of\:the\:rectangular\:sheet\:is\:100\:cm.}$
• $\bf{Length\:of\:the\:rectangular\:sheet\:is\:35\:cm.}$

$\large{\mathcal{\underline{\red{We\:know\:that,}}}}$

• $\bf{Perimeter\:of\:a\:rectangle\:is= 2(Length+Breadth)}$
• $\bf{Area\:of\:a\:rectangle =Length×Breadth}$

So, perimeter of the given rectangular sheet,

$\large{\sf{100=2(35+Breadth)}}$

$\large{\sf{→35+Breadth=\frac{100}{2}}}$

$\large{\sf{→35+Breadth=50}}$

$\large{\sf{→Breadth=50-35}}$

$\large{\sf{→Breadth=15}}$

So,Area of the given rectangular sheet,

$\large{\sf{35×25}}$

$\large{\sf{=525\:\:cm^2}}$

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$\large{ \underline{ \overline{ \mid{ \rm{ \red{Breadth→15\:\:cm}} \mid}}}}$

$\large{ \underline{ \overline{ \mid{ \rm{ \red{Area→525\:\:cm^2}} \mid}}}}$

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