Question

the sides of a traingle are 13 cm , 1 1/2 cm and 2 3/4 cm find perimeter​

Answer 1

Step-by-step explanation:

$\large{\underline{\underline{\mathfrak Given :-}}}$

• side a = 13 cm
• side b = 1 1/2 = 3/2 cm
• side c = 2 3/4 = 11/2 cm

$\large{\underline{\underline{\mathfrak To\:Find :-}}}$

perimeter of the triangle

$\large{\underline{\underline{\mathfrak Concepts :-}}}$

perimeter of the triangle:-

❥Sum of all sides

$\large{\underline{\underline{\mathfrak Solution:-}}}$

Perimeter:-

$\large\rightarrow\mathsf\green{a+b+c}$

$\large\rightarrow\mathsf\green{13 + \frac{3}{2} + \frac{11}{2} }$

$\large\rightarrow\mathsf\green{13 + \frac{14}{2} }$

$\large\rightarrow\mathsf\green{ \frac{40}{2} }$

$\large\rightarrow\mathsf\green{20}$

20 cm is your answer

$\large{\underline{\underline{\mathfrak Useful\:Formulae :-}}}$

Area of the triangle:-

$\large\rightarrow\mathsf\green{\frac{1}{2}×h×b}$

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Thank you