Step-by-step explanation:
Area of a triangle is directly proportional to the base and height of the triangle.
Let B and H be the original base and height of the triangle respectively.
The new triangle has base 1.3B and height 1.3H
Area of original triangle : Area of new triangle
= 0.5BH : 0.5(1.3B)(1.3H)
= 0.5BH : 0.5(1.69BH)
= 1 : 1.69
Hence, the new triangle is 69% larger than the original triangle.
