Question

11.Find the area of a triangular signboard whose sides are 5cm ,12 cm &13 cm respectively.​

Answer 1

Answer:

By using Herons formula

Step-by-step explanation:

$\sqrt{s(s - a)(s - b)(s - c)}$

Answer 2

Step-by-step explanation:

11. 5 ,12 &13 .

s=

2

(5+12+13)

s=

2

30

s=15cm

Area of the triangle (according to the Heron's Formula)

=

s(s−a)(s−b)(s−c)

=

15(15−5)(15−12)(15−13)

=

15(10)(3)(2)

=

900

=30cm

2

.