**triangle mensuration question answer**by perimeter and

**area formula**. if you had not read previous triangle mensuration shortcut formula yet, then visit that by clicking below link.

Classification of Triangles

Triangle mensuration formulas

## Triangle Mensuration perimeter Area formula

Look at below for important triangle**mensuration question and answer**.

**Question1:**What is the area of a 20 cm equilateral triangle?

Solution: You know that an

**equilateral triangle**is called which all arms are equal. Look at below image for area calculating shortcut formula and the solution of this type of question.

**Question 2:**A triangle which arms lengths are 20m, 30m and 40 m respectively. Now find the area of that triangles.

**Answer:**Here, the triangle is the isolateral triangle and we knew all arm lengths. Simply we will sue the hero formula to find the area. Look at below, how we solved the mensuration problems?

We hope, you got the easy solution of the triangle mensuration problem. Here, we have applied the HERON formula. You are seeing the S which value is half of the perimeter of the triangle.

Now look for the next triangle mensuration question and answer.

**Question 3:**A right angular triangle whose hypotenuse and the base are 6m and 4m respectively. Now find the area of the triangle?

**Solution:**

**Explanation:**we know the area formula of a triangle is (1/2)*base*height. But in this question height is unknown, though we know the hypotenuse and base. So we need to find the height of the triangle. As you have seen in the tutorial of triangle mensuration formula that the Pythagorean theorem can be used to find the height. So, we used it to find and applied to solve the mensuration. And finally used the formula (1/2)*base*height.

We will post more triangle mensuration question and answer with the mensuration formulas. Now, you may visit chapters-wise arithmetics math tricks or more mensuration formulas from here.

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