Answer:
The correct option is 3.
Step-by-step explanation:
The area of a triangle is
[tex]A=\frac{1}{2}\times b\times h[/tex]
Where, b is base of the triangle and h is the height of the triangle.
From the given figure it is noticed that the base of the triangle is 10 cm and the height of the triangle is 7 cm.
The triangle enlarged by a scale factor of 10. Now,
[tex]Base=10\times 10=100[/tex]
[tex]height=7\times 10=70[/tex]
The area of new triangle is
[tex]A=\frac{1}{2}\times 100\times 70[/tex]
[tex]A=3500[/tex]
Therefore the area of new triangle is 3500 cm². Option 3 is correct.
