Question

8) A rectangular sheet of paper is 12 1/2 cm long and 10 1/2
cm wide. Find its perimeter.
​

Answer 1

Answer:

answer is 23

Step-by-step explanation:

answer is 23

Answer 2

⠀⠀⠀⠀RequirEd Solution:

GivEn that:

• Length of rectangular sheet of paper = ${\sf{12 \dfrac{1}{2}}}$ cm

• Width/Breadth of rectangular sheet of paper = ${\sf{10 \dfrac{1}{2}}}$ cm

To fiNd:

• Perimeter of rectangular sheet of paper.

SolutioN:

• Perimeter of rectangular sheet of paper = 46 centimetres

Using ConEpt:

• Formula to find out the perimeter of rectangle.

UsiNg Formula:

• Perimeter = 2(length+breadth)

Changing mixed fraction into improper fraction firstly.

• ${\sf{12 \dfrac{1}{2} \: = \dfrac{25}{2} \: cm}}$

• ${\sf{10 \dfrac{1}{2} \: = \dfrac{21}{2}\: cm}}$

Diagram:

$\begin{gathered} \sf \dfrac{25}{2} \: cm \: \: \: \: \: \: \: \: \: \: \: \\ \begin{gathered}\begin{gathered}\boxed{\begin{array}{}\bf { \red{}}\\{\qquad \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }{}\\ { \sf{ }}\\ { \sf{ }} \\ \\ { \sf{ }}\end{array}}\end{gathered}\end{gathered} \sf \dfrac{21}{2} \: cm \end{gathered}$

Full SoluioN:

➢ Length of rectangular sheet of paper = ${\sf{12 \dfrac{1}{2}}}$ cm

➢ Width/Breadth of rectangular sheet of paper = ${\sf{10 \dfrac{1}{2}}}$ cm

MeaNs:

➢ Length of rectangular sheet of paper = ${\sf{12 \dfrac{1}{2} \: = \dfrac{25}{2} \: cm}}$

➢ Breadth of rectangular sheet of paper = ${\sf{10 \dfrac{1}{2} \: = \dfrac{21}{2}\: cm}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2(l+b)}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2(\dfrac{25}{2} + \dfrac{21}{2})}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2(\dfrac{46}{2})}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2(\cancel{\dfrac{46}{2})}}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2(23)}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{2 \times 23}}$

➢ Perimeter of rectangular sheet of paper = ${\sf{46 \: cm}}$

Henceforth, 46 centimetres is the perimeter of the rectangle.