Question

Find the area and perimeter of the triangle. PLEASEE HELP ME THANK YOUUU

Answer 1

Explanation:

F(-4,-3) ; E (4 , -3)

distance of EF = 4+4 = 8 units

h = 6 units

b = EF = 8 units

`Area = (1)/(2)*b*h\\\\= (1)/(2)*8*6\\\\= 4*6\\\\= 24 \ sq.units`

F(-4,-3) ; D(1,3)

`FD = \sqrt{(x_(2)-x_(1))^(2)+(y_(2)-y_(1))^(2)}\\\\=\sqrt{-1-[-4])^(2)+(3-[-3])^(2)}\\\\=\sqrt{-1+4)^(2)+(3+3)^(2)}\\\\=\sqrt{3^(2)+6^(2)}\\\\=√(9+36)\\\\=√(45)\\\\=6.7 units\\\\`

D(1 , 3) ; E(4,-3)

`ED = \sqrt{(4-1)^(2)+(-3-3)^(2)}\\\\\sqrt{3^(2)+(-6)^(2)}\\\\=√(9+36)\\\\=√(45)\\\\=6.7`

Perimeter = FD + ED + EF

= 6.7 +6.7 + 8

= 21.4 units