Question

Find area of triangle ABC if the side lengths are given as 13 cm, 17 cm & 12 cm.

Answer 1

Answer:

First you add these numbers.

Step-by-step explanation:

13cm + 17cm + 12cm= 42cm

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Answer 2

Answer:

Step-by-step explanation:

Area of triangle =   √s(s−a)(s−b)(s−c)

               s=a+b+c/2

                 =13+17+12/2

                  =42/2

                   =21

Area=√21(21-13)(21-17)(21-12)

         √21*8*9*4

         =√6048

         = 12√42

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