The sides of a triangular park are 200 m, 210 m and 290 m. The area of the park (in hectares) is:
Answer & explanation
Correct answer: option 3
Given,
The sides of the triangular = 200m, 210m and 290m
If it a right angled triangle then,
we know, (290)2 = (200)2 + (210)2
= 84100 = 84100
Now we can say that triangle is a right-angled triangle.
Area of right angled triangle = \(\frac{1}{2}\) × Base × Height \(\frac{1}{2}\) × 200 × 210 = 21000 m2
We know, 1 Hectares = 10,000 m2
21000m2 = 2.1 Hectares