Description of Estonian students:

Artur, Arseni

Draw a circle in middle of paper. Then draw vertical rectangle under the circle.

Then draw horizontal rectangle on top of first rectangle. And for last draw two rectangle under the horizontal rectangle they need to be vertical.

Data

Solution

Area of the image: 

Lithuanian students resolved the Estonian task:

Data:

r= 2 cm

a₁= 8 cm

b₁= 1 cm

a₂= 3 cm

b₂= 1 cm

a₃= 6 cm

b₃= 2 cm

Solution

Area of the image: 38,56 cm²

Estonian original work:

ORIGINAL

Eglė, Augustė

  This is a picture of a face of mickey. Draw a big circle in the middle of the sheet of paper. Draw two circles on the top of the big circle like ears. Eyes are two smaller circles and in the middle of a big circle is another small circle - nose. Draw a  line below the nose. It is a smile.

Solution

Area of a big circle:                                Area of eyes circles:

Area of ears circles:                                Area of nose circle:

Estonian students resolved the Lithuanian task:

Solution:  https://docs.google.com/document/d/100yO91MEkRo7a9q35YAzihGobO16Zcutr9AVhuMStqE/edit?usp=sharing

Lithuanian original work

ORIGINAL

Solution

Area of a big circle:   38,465 cm²                      

Area of eyes circles: 0,785 cm², 0,785 cm²

Area of ears circles:   19,625 cm²,  19,625 cm²          

Area of nose circle: 3,14 cm²