Question

*If the rectangle is 8.5 cm long and 3.5 cm wide, what is its perimeter ?*

Answer 1

Given:-

• A rectangle is 8.5 cm long and 3.5 wide.

To find:-

• Perimeter of a rectangle.

Solution:-

Here,

• Length (l) = 8.5 cm
• Breadth (b) = 3.5 cm

According to the question,

→ Perimeter = 2(length + breadth)

→ P = 2(l + b)

→ P = 2(8.5 + 3.5)

→ P = 2(12)

→ P = 24 cm

Hence,

• the perimeter of a rectangle is 24 cm.

More Formulas:-

→ Perimeter of rectangle = 2(l + b)

→ Perimeter of square = 4 × side

→ Area of square = a²

→ Area of rectangle = l × b

→ Area of triangle = ½ × b × h

→ Area of parallelogram = b × h

Answer 2

AnswEr -:

$\mathrm {\bf{ Given-:}}$

• The Length of Rectangle is 8.5 cm
• The Breadth of Rectangle is 3.5 cm

$\mathrm {\bf{To\:Find-:}}$

• Perimeter of Rectangle.

$\dag{\mathrm {\bf{ Solution \:of\:Question-:}}}$

As , We know that ,

• $\underline{\boxed{\star{\sf{\red{Perimeter _{(Rectangle)}  \: = \: 2 ( Length + Breadth)\:units}}}}}$

• $\mathrm {\bf{ Here-:}}$

• The Length of Rectangle is 8.5 cm
• The Breadth of Rectangle is 3.5 cm

Now By Putting known Values in Formula of Perimeter of Rectangle.-:

• $\longmapsto { \mathrm { Perimeter \:= 2(8.5 + 3.5) }}$

• $\longmapsto { \mathrm { Perimeter \:= 2\: \times 12 }}$

• $\underline{\boxed{ \mathrm { Perimeter \:= 24 cm }}}$

Hence,

• $\dag{\underline {\mathrm {\bf{\red{ The\:Perimeter \:of\:Rectangle \:is\:-: 24 \:cm}}}}}$

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$\large{\boxed {\mathrm {\bf |\:\: { \underline { More \:To\:Know-:}}\:\:|}}}$

• $\dag{\underline {\mathrm {\bf{\red{ Perimeter _{(Rectangle)}  \: = \: 2 ( Length + Breadth)\:units}}}}}$

• $\dag{\underline {\mathrm {\bf{\red{ Perimeter _{(Square)}  \: = \: 4 \times Side \:units}}}}}$

• $\dag{\underline {\mathrm {\bf{\red{ Area _ {(Rectangle)}  \: = \: Length \times Breadth\:sq.units}}}}}$

• $\dag{\underline {\mathrm {\bf{\red{ Area _{(Square)}  \: = \: Side\times Side \:sq.units}}}}}$

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