Question

Please delete this @perl

Answer 1

You already got an answer, lol..

Answer 2

am correct thought ?

Answer 3

Yeah.

Answer 4

@iGreen

Answer 5

30*38+19*38+23*38=38*(30+19+23)
but you need to find the area of the 2 triangles then add them

Answer 6

using cos law
C^2=a^2+b^2-2ab cos (theta)

Answer 7

the answer is C not D

Answer 8

i look to the pic it shows that the angle between 23 and 19 is right angle which makes life much easer even though it is not right since 30^2=19^2+23^2 are not equal.
however, the area of the triangle is (23*19*/2) *2 (for the 2 sides)=437

Answer 9

the other sides= 38*(19+30+23)=38*72=2736
total=2736+437=3173