Question

2.Application of the experimental fact that "the black bodies are better heat absorber and better heat radiators than white bodies.​

Answer 1

Answer:

Given:-

Coordinate A=(10,-6)

Coordinate B=(2,5)

Coordinate C=(-1,3)

To find:-

According to question we have to find the area of triangle.

Solution:-

Area of triangle=\dfrac{1}{2}

2

1

[x1(y2-y3)+x2(y3-y1)+x3(y1-y2)]

∴ Area of triangle=\dfrac{1}{2}

2

1

[10(5-3)+2(3-(-6)-1(-6-5)]

∴Area of triangle=\dfrac{1}{2}

2

1

[10×2+2×9-1×11]

∴Area of triangle=\dfrac{1}{2}

2

1

[20+18+11]

∴ Area of triangle=\dfrac{1}{2}

2

1

×49

∴ Area of triangle=24.5 sq units

______________

Hence option< strong > < /strong > \sf \pink{Option \ [B]24.5}<strong></strong>Option [B]24.5 is the correct answer✔️