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avatarFastTamarind948
Secondary I • 3yr.

How to calculate the area and the perimeter of this triangle:

image.png

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Thank you!

Mathematics
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  • Explanation from Alloprof

    Explanation from Alloprof

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      avatarKevin Hteacher check
      Team Alloprof • 3yr.

      Hello again!

      The perimeter is the measure of the outline of a figure. By adding all the sides, we can find it.

      Area is a measure of the area occupied by an object in 2 dimensions.

      So the perimeter of this triangle is just side a + side b + side c.

      Regarding the area of ​​a triangle, it is its base multiplied by its height ÷ by 2. You should know that the base of a triangle is always perpendicular to its height. So in your picture, the height corresponds to this (in red):

      image.png

      Ce contenu est protégé par le droit d'auteur. Toute reproduction à l'extérieur des forums Alloprof est interdite et pourra être considérée comme une violation du droit d'auteur.

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      So the height of this triangle is 5 cm.

      Now you are able to calculate your perimeter and area. 

      Have a nice day.

      KH

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