Question

Area of triangular sign board whose sides are 5 cm, 12 cm and 13 cm respectively ___________ *​

Answer 1

Answer:

Given, the sides of a triangle are 5cm,12cm and 13 CM

semi - perimeter = $\frac{a + b + c}{2}$

s =  $\frac{5 + 12 + 13}{2}$

s = $\frac{30}{2}$

s =  15cm

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

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

= $\sqrt{15(15-5)(15-12)(15-13)}$

= $\sqrt{15(10)(3)(2)}$

= $\sqrt{900}$

= $30cm^{2}$

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Answer 2

Answer:

30cm

Step-by-step explanation: