Description of Estonian students:

Berit,Johanna,Trinity

Draw 1 large rectangle then its upright triangle

Draw a circle on both sides of the rectangle and in the middle a triangle centered at the bottom of the rectangle and one small triangle and a circle on the left side of this rectangle

Data

r1 =

a1 =

a2 =

h1 =

h2 =

b=

Solution

Area of the triangles:                         

Area of the rectangle:                      

Area of the circle:  

Lithuanian students resolved the Estonian task:

Data

r₁ = 1,5 cm

a₁ = 8,5 cm

a₂ = 3 cm

h₁ = 5,4 cm

h₂ = 2,9 cm

b= 3,5 cm

Solution

Area of the triangles:  22,95 cm²; 4,35  cm²                     

Area of the rectangle:   29,75 cm²                  

Area of the circle:  7,065 cm²

Estonian original work

https://docs.google.com/document/d/e/2PACX-1vQW89sUbwHzhfRokwdeeSXni4vXAoF-H-OyoYh4wOvHbXht06CxTrVeq2eu9D_onX0OR8PWET7HyCEm/pub

Description of Lithuanian students:

Tijus, Lukas, Andrius

First of all you need to draw a cirlcle with 1/4 cut. Then draw to triangle that look like a bowtie on top of the big cirlce. After that you'll need to draw an eye - little circle. It will be on the top right of the big circle. And the last one you'll have to draw an even smaller circle in the base of the eye lid.

Solution

Area of the 3/4 bigest circle:                   Area of bigger eye circle:

Area of triangles:                                      Area of smaller eye circle:

Estonian students resolved the Lithuanian task:

Lithuanian original work

ORIGINAL

Solution

Area of the 3/4 bigest circle: 84,78 cm²  

Area of bigger eye circle: 1,54 cm²  

Area of triangles: 4,2 cm² ; 4,2 cm²                                  

Area of smaller eye circle: 0,2 cm²