Question

Find the area of triangle whose sides are 42cm, 34cm and 20cm in length​

Answer 1

perimeter of the triangle= 34+42+20= 96 cm

semi perimeter= perimeter÷2= 96÷2=48 cm

area of triangle = √s* (s-a) (s-b) (s-c)

√48*(48-42)* (48-34)*(48-20)

√48*6*14*28

√112896

=336 cm square.unit

Answer 2

Answer:

Yes she is correct

Up girl