#1**+1 **

4.702, so your answer is 4.70. I got this using S-A-S, using the 2 sides and an angle you get 4.702. Can you please answer my question right under this please?

CPhilFanboy Apr 20, 2020

#2**+1 **

Two unlabelled angles are = 54^{o}

x / sin72 = 4 / sin 54 x = third side = 4.70228 in

Now you can use Heron's Rule to find the area.....are you familiar with it?

Or pythag theorem to find height 4^2 - ( 4.70228/2 )^2 = h^2 h= 3.23606

area = 2 x 1/2 b h = b h = 2.35114 X 3.23606 = ~~7.61 in^{2 }(edited)

ElectricPavlov Apr 20, 2020

#5**+1 **

area = 2 x 1/2 b h = b h

I did BUT there are TWO triangles in this method of solution 2 x 1/2 = 1

I just used the wrong base should be 2.3511 not 4.70228 Thanx for correction !

ElectricPavlov
Apr 20, 2020