Description of Estonian students:

Hanna-Riin, Anette, Emili

Draw a circle in center of the paper.Draw a second circle in the first circle and then draw two small ovals outside the first circle one to the right and one to the left.

Draw a stripe on top of the first circle.Then draw two triangles in the smaller circle one to the right and one to the left.
After you have done that,draw a small circle below the two triangles.Then draw two small circles inside the smaller circle,and then you are done.

Data

r1 =

r2 =

Solution

Area of the  biggest circle:                     Circumference of the biggest circle        

Area of the small circle:                          Circumference of the small circle

Lithuanian students resolved the Estonian task:

Livija, Gerda

This is the picture af a cat. Now draw a body which is triangle with one angle 90 degree. Then on the left top corner draw a head which is a quardangle. On the both sides of the quardrangle, draw ears wich is two small triangles. Now you have to draw a foot in the triangle at the bottom of the left which is a lying rectangle; now on rectangle draw a quardangle sides. Finally, close to the end, draw a tail at the bottom right of a triangle which is trapeze.

Solution

Area of square:                                       Area of rectangle and square:

Area of  big triangle:                                       Area of trapeze:

Area of small triangle:

Estonian students resolved the Lithuanian task:

SOLUTION

Solution

Area of square:                    Area of rectangle and square: 4,8cm2 and 4,25cm2

Area of  big triangle:   18,06cm2                                 Area of trapeze: 1,15cm2

Area of small triangle: 1cm2

Lithuanian original work

ORIGINAL

Solution

Area of square: 9 cm2

Area of rectangle and square: 2,1 cm2

Area of  big triangle:  22,75 cm2       

Area of trapeze: 5,22 cm2

Area of small triangle: 0,6 cm² ; 0,6 cm²