The sides of a triangular park are 200 m, 210 m and 290 m. The area of the park (in hectares) is:

2.1

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