SOLUTION: (c) (i) Find ∠BCA in the triangle , giving your answer correct to the nearest degree ab = 28.8cm bc = 22.7cm ca = 38.4cm Find the area of the triangle ABC in part (c)(

Algebra ->  Triangles -> SOLUTION: (c) (i) Find ∠BCA in the triangle , giving your answer correct to the nearest degree ab = 28.8cm bc = 22.7cm ca = 38.4cm Find the area of the triangle ABC in part (c)(      Log On


   

Question 957544: (c) (i) Find ∠BCA in the triangle , giving your answer
correct to the nearest degree
ab = 28.8cm
bc = 22.7cm
ca = 38.4cm
Find the area of the triangle ABC in part (c)(i), giving your
answer correct to the nearest square cm

Answer by satyareddy(3) About Me  (Show Source):
You can put this solution on YOUR website!
by using heron's formula
area = sq rt (s-a)(s-b)(s-c)
where s=(a+b+c)/2
s=28.8+22.7+38.4=89.9/2=44.95
area=sq rt (44.95-28.8)(44.95-22.7)(44.95-38.4)
= sq rt(16.15)(22.25)(6.55)=sq rt(2353.66)=48.51 sq cm