Answer:
Area = 16 cm²
Perimeter = 20.9 cm
Step-by-step explanation:
To find the perimeter and area of the given triangle length of all sides of the given triangle will be required.
Use the formula to determine the distance between two points and ,
d =
Distance between A(0,9) and B(4, 9),
AB = = 4 cm
Distance between A(0,9) and C(0, 1),
AC =
AC = 8 cm
Distance between B(4, 9) and C(0, 1),
BC =
BC =
=
=
= 8.9 cm
Area of ΔABC =
=
= 16 cm²
Perimeter of the triangle = AB + AC + BC
= 4 + 8 + 8.9
= 20.9 cm