Question

Q10. Find the area of the triangle whose sides are 5cm,

7cm and 10 cm. ​

Answer 1

ANSWER

The area of triangle is 2√66 cm²

GIVEN

The sides of a triangle are 5cm , 7cm and 10cm

TO FIND

The area of the triangle

FORMULA TO BE USED

If a , b and c are the three sides of a triangle then its area is given by :

SOLUTION

Let us consider the sides of the triangle be

a = 5cm , b = 7cm and c = 10cm

Now area of the triangle will be :

Answer 2

Answer:

17.5 sq. cm

Step-by-step explanation:

You can draw a model of the triangle, and since every triangle is half of a square or rectangle, add the other half. Then, calculate the area of the quadrilateral. It is 35. Since every triangle is half of a square or rectangle, the area of the triangle will be half the area of the quadrilateral. 35 ÷ 2 = 17.5.

Hence, the area of the triangle is 17.5 sq. cm.