3) The sides of a triangle measure 12 cm,
16 cm and 20 cm, then find the area of
the triangle.
Answer 96 cm
step by step
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Answer:
The given triangle is a right angled triangle.
(Hypotenuse^2)=(base^2)+(altitude^2)
Hypotenuse^2=20^2=400
(base^2)+(altitude^2)
=(16^2)+(12^2)
=256+144
=400
L.H.S=R.H.S
So the triangle is a right angled triangle.
Area of a right angled triangle
=(1/2)(base x altitude)
So, area of the triangle
=(1/2)(16 x 12)
=(1/2)(192)
=96 cm²
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