Question

Find the area of a trianlge whose sides are 150 cm, 120 cm and 130 cm. (Heron's Formula)

URGENT PLEASE!!

Answer 1

Let a be 150 cm, b be 120 & c be 130 cm

Here,
                 $s = \frac{150+120+130}{2}$
                        s = 400/2
                        s = 200

Area according to Heron's Formula,
                       $\sqrt{s(s-a)(s-b)(s-c)}$ cm²
                   =  $\sqrt{200(200-150)(200-120)(200-130)}$ cm²
                   = $\sqrt{200*50*80*70}$ cm²
                   = $\sqrt{56000000}$
                   = 7483.31 cm²