Question

Find the area of a triangle whose sides are 29 cm, 20 cm,21 cm​

Answer 1

Answer:

perimeter= 29 + 20+21 = 70cm

semi perimeter= 70/2= 35

hero's formula = √ s (s-a)(s-b)(s-c)

area of the triangle = √ 35 (35-20)(35-21)(35-29)

= √ 35*15*14*6

= √ 44100

= 210

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