The area of the larger triangle is
and the area of the smaller triangle is 
Further explanation:
Given:
The ratio of the perimeters of two similar triangles is 
Explanation:
If triangles are similar then the ratio of the areas is equal to the square ratio of corresponding sides as well as the square of the perimeter.
Assume that the area of larger triangle as Q.
Assume that the area of smaller triangle as P.
The given ratio of the perimeters of the triangle is 
The ratio of the areas of the larger and smaller triangle can be expressed as follows,

The sum of area of larger triangle and the area of smaller triangle is 

Now, substitute
for
in equation 

The area of larger triangle can be calculated as follows,

The area of the larger triangle is
and the area of the smaller triangle is 
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Answer details:
Grade: High School
Subject: Mathematics
Chapter: Triangles
Keywords: Ratio, perimeter, similar, similarity, triangles, proportional, square, area, area of triangle, two similar triangles, sum, sum of areas, 65 cm2, 4:7, corresponding sides.