Question

help me this question ​

Answer 1

Answer:

18triangles were coloured

7/18

Step-by-step explanation:

2ans I no but 3rd one I not no sorry for that

Answer 2

Answer:

$\huge\frac{ \orange{18}}{2 \orange5}$

Step-by-step explanation:

In given picture lines are such that they are parting triangle in to many small triangles of equal area . [ It can be easily showed that all triangles have same are because each has equal sides so all of them are equilateral triangles and congruent to each other ] .

Let area of a small triangle be A .

So area of big triangle = total number of small triangles × A

$= 25 \times A = 25A$

Area of red portion = Total number of triangles that are red × A

$= 18 \times A = 18A$

So ratio of their areas

$= \frac{ \red{red \: area}}{total \: area} = \frac{18A}{25A} = \frac{18}{25}$