Question

The points 0 (0,0), A(4,0), B(0, 10) are the vertices of the triangle OAB. The area of ∆OAB is :​

Answer 1

Answer:

20

${unit}^{2}$

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Answer 2

Answer:

are of a triangle when the coordinates of three vertices are given is given by the equation

A = 1/2 [ x₁(y₂-y₃) + x₂(y₃-y₁) + x₃(y₁-y₂) ]

x₁ = 0, y₁ = 0 , x₂ = 4, y₂ = 0, x₃ = 0, y₃ = 10

A = 1/2 [ 0(0-10) + 4(10-0) + 0(0-0) ]

A = 1/2 [ 0 + 40 + 0 ]

A = 1/2 × 40

A = 20 sq units Answer