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Lady_Fox [76]
3 years ago
9

Formula valid for all polygons: P =______________

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

perimeter = sum of all sides. this is same for polygons

rect: area l×b. peri = 2(l+b)

Step-by-step explanation:

15+5 = 20

20*2 = 40 cm is the perimeter of the given figure

sergiy2304 [10]3 years ago
4 0

Answer:

P = <u>40 cm</u>

Step-by-step explanation:

Here,

  • We can see that the given polygon is a rectangle.
  • The length and breadth of rectangle is 15 cm and 5 cm.

As we know that the formula of perimeter of rectangle is :

\longrightarrow{\pmb{\tt{P = 2(L +  B)}}}

  • P = Perimeter
  • L = Length
  • B = Breadth

Substituting all the given values in the formula to find the perimeter of rectangle :

\begin{gathered} \qquad{\longrightarrow{\sf{P = 2(L +  B)}}}\\\\\qquad{\longrightarrow{\sf{P = 2(15 +  5)}}}\\\\\qquad{\longrightarrow{\sf{P = 2(20)}}}\\\\\qquad{\longrightarrow{\sf{P = 2 \times 20}}}\\\\\qquad{\longrightarrow{\sf{P = 40}}}\\ \\ \qquad{\star{\underline{\boxed{\sf{ \red{P = 40 \: cm}}}}}}\end{gathered}

Hence, the perimeter of rectangle is 40 cm.

\rule{300}{2.5}

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