Skip to content

Help Zone

Student Question

Français
2
Back
avatarFastTamarind948
Secondary I • 2yr.

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

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.

i-icon


Thank you!

Mathematics
Provide an answer
avatar
avatar

{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Submit my answerSubmit my answer

Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Options
      avatarKevin Hteacher check
      Team Alloprof • 2yr.

      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.

      i-icon


      So the height of this triangle is 5 cm.

      Now you are able to calculate your perimeter and area. 

      Have a nice day.

      KH

    Québec RioTinto Desjardins Pathy TROTTIER OTHER
    Ask a question