Description of Estonian students:

Barbara, Laura, Karoliina

In the middle of the page draw a large square. On right the side draw a small circle. On top of the square draw a large circle. On top of that draw two long and skinny vertical rectangles. In the middle of the large circle draw two small circles and beneath those a small heart.

Data

Large rectangle edges are 6,6cm and 6cm
Small circle r=0,9cm
Large circle r=3,5cm
Long and skinny vertical rectangel:
a1=4,1cm and b1=1cm
a2=3,9cm and b2=1,2cm

Solution

Area of the image: 

 Lithuanian students resolved the Estonian task:

Data:

R₁=1,4 cm

R₂=0,5 cm

a= 1,5 cm

b= 2,6 cm

c= 3 cm

d= 2,7 cm

Solution

Area of the image: 19,72 cm²

Estonian original work

ORIGINAL

Gabrielius, Modestas

There‘s a picture of  a robat. Draw a trapezoid in middle of the sheet of paper. It is rectangle below the trapezoid.There are two legs narrow rectangles bellow the body. Foots are  two rectangles. Go up on there top above the trapezoid is a rectangle and above another longer restangle. Neek is a trapezoid. The head is a square. Above the head is hat -  high trapezoid. Eyes are two little squares. The shoulders are two hexagons. The left hand is a long rectangle raised to the top and the right hand is a long rectangle lowered down.

Solution

Area of trapezoids:                         Area of hexagons:

Area of squares:                             Area of rectangles:

 Estonian students resolved the  Lithuanian task:

Solution: https://docs.google.com/document/d/1wP9pLN1tz86-YdnJSlkFU3iKEFw7XJjrxPCA-iSKI5Y/edit?usp=sharing

Lithuanian original work

ORIGINAL

Solution

Area of trapezoids:  42.24 cm2, 13.68 cm2, 42.12 cm2

Area of hexagons: 9.92 cm² , 9.92 cm²

Area of squares:  9.8 cm²,  2.2 cm² ,  2.2 cm²                     

Area of rectangles: 3.4 cm², 27.6 cm², 19.6 cm², 19.6 cm², 28.16 cm², 75.6 cm², 4 cm², 4 cm², 7.4 cm², 11.2 cm²