Question

find tha area of a triangle whose sides are 8cm,11cm,and 13cm​

Answer 1

Answer:

Let third side be x

Perimeter =8+11+x

19+x=32

x=13

S=

2

32

=16

Heron's formula

A=

S(S−A)(S−B)(S−C)

=

16(16−8)(16−11)(16−13)

=

16×8×5×3

=8

30

cm

2

Answer 2

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