Question

the sides of a triangle are 12cm, 11cm and 13 cm. Find the area​

Answer 1

Area - a*b*c

= 12 * 11 *13 cm
= 1534

Answer 2

Answer:6$\sqrt{105}$ cm²

Step-by-step explanation:

s=12+11+13/2

=36/2

=18

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

                         =$\sqrt{18(18-11)(18-12)(18-13)} \\\sqrt{18x7x6x5}$

                           (The x  indicates multiplication)

                          =$\sqrt{6x3x6x5x7}$

                          =6$\sqrt{105}$ cm²