Question

find the area of triangle whose Sides are13cm 14cm 15cm with heron's formula ​

Answer 1

Answer:

Herons Formula = √S (s-a)(s-b)(s-c)

Here s stands for Semi Perimeter and a, b, and c stands for respective sides for the given triangle.

A.T.Q.

Semi perimeter = a+b+c / 2

13 + 14 + 15 /2 = 42/2 = 21

√21 (21-13) (21-14) (21-15)

√21 (8) (7) (6)

√3×7×2×2×2×7×3×2

Now making pairs and taking out numbers out of root.

3×7×2×2

= 84 sq.m

Hope you got your answer.

Answer 2

Step-by-step explanation:

a=13 cm

b=14cm

c= 15 cm

Semi-perimetre= 1/2(a+b+c)

= 1/2(13+14+15)

= 21

Area of triangle= √{21(21-13)(21-14)(21-15)

= 84cm^2

Hope it will be helpful ☺️ thank you!!